icmp: clean up the extension code and comments.

[tcpdump] / print-bgp.c

diff --git a/print-bgp.c b/print-bgp.c
index 3eb85aa426a9f86c64b4d3336f82d545175471f9..ba927e4b26261dc7b010760e6647b1374900cff8 100644 (file)
--- a/print-bgp.c
+++ b/print-bgp.c
@@ -26,46 +26,43 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *

- * Extensively modified by Hannes Gredler (hannes@juniper.net) for more
+ * Extensively modified by Hannes Gredler (hannes@gredler.at) for more

  * complete BGP support.
  */
 
  * complete BGP support.
  */
 

-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+/* \summary: Border Gateway Protocol (BGP) printer */

 
 

-#ifndef lint
-static const char rcsid[] _U_ =
-     "@(#) $Header: /tcpdump/master/tcpdump/print-bgp.c,v 1.105 2007-05-16 14:02:51 hannes Exp $";
+/* specification: RFC 4271 */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>

 #endif
 
 #endif
 

-#include <tcpdump-stdinc.h>
+#include "netdissect-stdinc.h"

 
 #include <stdio.h>
 #include <string.h>
 
 
 #include <stdio.h>
 #include <string.h>
 

-#include "interface.h"
-#include "decode_prefix.h"
+#include "netdissect.h"

 #include "addrtoname.h"
 #include "extract.h"
 #include "addrtoname.h"
 #include "extract.h"

-#include "bgp.h"

 #include "af.h"
 #include "l2vpn.h"
 
 struct bgp {
 #include "af.h"
 #include "l2vpn.h"
 
 struct bgp {

-       u_int8_t bgp_marker[16];
-       u_int16_t bgp_len;
-       u_int8_t bgp_type;
+    nd_byte     bgp_marker[16];
+    nd_uint16_t bgp_len;
+    nd_uint8_t  bgp_type;

 };
 };

-#define BGP_SIZE               19      /* unaligned */
+#define BGP_SIZE        19    /* unaligned */

 
 

-#define BGP_OPEN               1
-#define BGP_UPDATE             2
-#define BGP_NOTIFICATION       3
-#define BGP_KEEPALIVE          4
+#define BGP_OPEN                1
+#define BGP_UPDATE              2
+#define BGP_NOTIFICATION        3
+#define BGP_KEEPALIVE           4

 #define BGP_ROUTE_REFRESH       5
 
 #define BGP_ROUTE_REFRESH       5
 

-static struct tok bgp_msg_values[] = {
+static const struct tok bgp_msg_values[] = {

     { BGP_OPEN,                 "Open"},
     { BGP_UPDATE,               "Update"},
     { BGP_NOTIFICATION,         "Notification"},
     { BGP_OPEN,                 "Open"},
     { BGP_UPDATE,               "Update"},
     { BGP_NOTIFICATION,         "Notification"},


@@ -75,99 +72,115 @@ static struct tok bgp_msg_values[] = {
 };
 
 struct bgp_open {
 };
 
 struct bgp_open {

-       u_int8_t bgpo_marker[16];
-       u_int16_t bgpo_len;
-       u_int8_t bgpo_type;
-       u_int8_t bgpo_version;
-       u_int16_t bgpo_myas;
-       u_int16_t bgpo_holdtime;
-       u_int32_t bgpo_id;
-       u_int8_t bgpo_optlen;
-       /* options should follow */
+    nd_byte     bgpo_marker[16];
+    nd_uint16_t bgpo_len;
+    nd_uint8_t  bgpo_type;
+    nd_uint8_t  bgpo_version;
+    nd_uint16_t bgpo_myas;
+    nd_uint16_t bgpo_holdtime;
+    nd_uint32_t bgpo_id;
+    nd_uint8_t  bgpo_optlen;
+    nd_uint8_t  bgpo_opttype;         /* RFC9072 */
+    nd_uint16_t bgpo_optlen_extended; /* RFC9072 */
+    /* options should follow */

 };
 };

-#define BGP_OPEN_SIZE          29      /* unaligned */
+#define BGP_OPEN_SIZE        29    /* unaligned */

 
 struct bgp_opt {
 
 struct bgp_opt {

-       u_int8_t bgpopt_type;
-       u_int8_t bgpopt_len;
-       /* variable length */
+    nd_uint8_t  bgpopt_type;
+    nd_uint16_t bgpopt_len; /* Can be one or two bytes, depending on RFC9072 */
+    /* variable length */

 };
 };

-#define BGP_OPT_SIZE           2       /* some compilers may pad to 4 bytes */
-
-#define BGP_UPDATE_MINSIZE      23
+#define BGP_OPT_SIZE           2    /* some compilers may pad to 4 bytes */
+#define BGP_CAP_HEADER_SIZE    2    /* some compilers may pad to 4 bytes */

 
 struct bgp_notification {
 
 struct bgp_notification {

-       u_int8_t bgpn_marker[16];
-       u_int16_t bgpn_len;
-       u_int8_t bgpn_type;
-       u_int8_t bgpn_major;
-       u_int8_t bgpn_minor;
+    nd_byte     bgpn_marker[16];
+    nd_uint16_t bgpn_len;
+    nd_uint8_t  bgpn_type;
+    nd_uint8_t  bgpn_major;
+    nd_uint8_t  bgpn_minor;

 };
 };

-#define BGP_NOTIFICATION_SIZE          21      /* unaligned */
+#define BGP_NOTIFICATION_SIZE        21    /* unaligned */

 
 struct bgp_route_refresh {
 
 struct bgp_route_refresh {

-    u_int8_t  bgp_marker[16];
-    u_int16_t len;
-    u_int8_t  type;
-    u_int8_t  afi[2]; /* the compiler messes this structure up               */
-    u_int8_t  res;    /* when doing misaligned sequences of int8 and int16   */
-    u_int8_t  safi;   /* afi should be int16 - so we have to access it using */
-};                    /* EXTRACT_16BITS(&bgp_route_refresh->afi) (sigh)      */ 
-#define BGP_ROUTE_REFRESH_SIZE          23
-
-struct bgp_attr {
-       u_int8_t bgpa_flags;
-       u_int8_t bgpa_type;
-       union {
-               u_int8_t len;
-               u_int16_t elen;
-       } bgpa_len;
-#define bgp_attr_len(p) \
-       (((p)->bgpa_flags & 0x10) ? \
-               EXTRACT_16BITS(&(p)->bgpa_len.elen) : (p)->bgpa_len.len)
-#define bgp_attr_off(p) \
-       (((p)->bgpa_flags & 0x10) ? 4 : 3)
+    nd_byte     bgp_marker[16];
+    nd_uint16_t len;
+    nd_uint8_t  type;   /* No padding after this; afi is, in fact, not aligned */
+    nd_uint16_t afi;
+    nd_uint8_t  subtype;
+    nd_uint8_t  safi;

 };
 };

-
-#define BGPTYPE_ORIGIN                 1
-#define BGPTYPE_AS_PATH                        2
-#define BGPTYPE_NEXT_HOP               3
-#define BGPTYPE_MULTI_EXIT_DISC                4
-#define BGPTYPE_LOCAL_PREF             5
-#define BGPTYPE_ATOMIC_AGGREGATE       6
-#define BGPTYPE_AGGREGATOR             7
-#define        BGPTYPE_COMMUNITIES             8       /* RFC1997 */
-#define        BGPTYPE_ORIGINATOR_ID           9       /* RFC1998 */
-#define        BGPTYPE_CLUSTER_LIST            10      /* RFC1998 */
-#define        BGPTYPE_DPA                     11      /* draft-ietf-idr-bgp-dpa */
-#define        BGPTYPE_ADVERTISERS             12      /* RFC1863 */
-#define        BGPTYPE_RCID_PATH               13      /* RFC1863 */
-#define BGPTYPE_MP_REACH_NLRI          14      /* RFC2283 */
-#define BGPTYPE_MP_UNREACH_NLRI                15      /* RFC2283 */
-#define BGPTYPE_EXTD_COMMUNITIES        16      /* draft-ietf-idr-bgp-ext-communities */
-#define BGPTYPE_PMSI_TUNNEL             17      /* draft-ietf-l3vpn-2547bis-mcast-bgp-02.txt */
-#define BGPTYPE_ATTR_SET               128      /* draft-marques-ppvpn-ibgp */
-
-#define BGP_MP_NLRI_MINSIZE              3       /* End of RIB Marker detection */
-
-static struct tok bgp_attr_values[] = {
+#define BGP_ROUTE_REFRESH_SIZE          23
+#define BGP_ROUTE_REFRESH_SUBTYPE_NORMAL 0
+#define BGP_ROUTE_REFRESH_SUBTYPE_BORR 1
+#define BGP_ROUTE_REFRESH_SUBTYPE_EORR 2
+#define BGP_ROUTE_REFRESH_SUBTYPE_RESERVED 255
+
+static const struct tok bgp_route_refresh_subtype_values[] = {
+    {BGP_ROUTE_REFRESH_SUBTYPE_NORMAL, "Normal route refresh request"},
+    {BGP_ROUTE_REFRESH_SUBTYPE_BORR,
+     "Demarcation of the beginning of a route refresh"},
+    {BGP_ROUTE_REFRESH_SUBTYPE_EORR,
+     "Demarcation of the ending of a route refresh"},
+    {0, NULL}};
+
+#define bgp_attr_lenlen(flags, p) \
+    (((flags) & 0x10) ? 2U : 1U)
+#define bgp_attr_len(flags, p) \
+    (((flags) & 0x10) ? GET_BE_U_2(p) : GET_U_1(p))
+
+#define BGPTYPE_ORIGIN                   1
+#define BGPTYPE_AS_PATH                  2
+#define BGPTYPE_NEXT_HOP                 3
+#define BGPTYPE_MULTI_EXIT_DISC          4
+#define BGPTYPE_LOCAL_PREF               5
+#define BGPTYPE_ATOMIC_AGGREGATE         6
+#define BGPTYPE_AGGREGATOR               7
+#define BGPTYPE_COMMUNITIES              8    /* RFC1997 */
+#define BGPTYPE_ORIGINATOR_ID            9    /* RFC4456 */
+#define BGPTYPE_CLUSTER_LIST            10    /* RFC4456 */
+#define BGPTYPE_MP_REACH_NLRI           14    /* RFC4760 */
+#define BGPTYPE_MP_UNREACH_NLRI         15    /* RFC4760 */
+#define BGPTYPE_EXTD_COMMUNITIES        16    /* RFC4360 */
+#define BGPTYPE_AS4_PATH                17    /* RFC6793 */
+#define BGPTYPE_AGGREGATOR4             18    /* RFC6793 */
+#define BGPTYPE_PMSI_TUNNEL             22    /* RFC6514 */
+#define BGPTYPE_TUNNEL_ENCAP            23    /* RFC5512 */
+#define BGPTYPE_TRAFFIC_ENG             24    /* RFC5543 */
+#define BGPTYPE_IPV6_EXTD_COMMUNITIES   25    /* RFC5701 */
+#define BGPTYPE_AIGP                    26    /* RFC7311 */
+#define BGPTYPE_PE_DISTINGUISHER_LABEL  27    /* RFC6514 */
+#define BGPTYPE_ENTROPY_LABEL           28    /* RFC6790 */
+#define BGPTYPE_LARGE_COMMUNITY         32    /* draft-ietf-idr-large-community-05 */
+#define BGPTYPE_ATTR_SET               128    /* RFC6368 */
+
+#define BGP_MP_NLRI_MINSIZE              3    /* End of RIB Marker detection */
+
+static const struct tok bgp_attr_values[] = {

     { BGPTYPE_ORIGIN,           "Origin"},
     { BGPTYPE_AS_PATH,          "AS Path"},
     { BGPTYPE_ORIGIN,           "Origin"},
     { BGPTYPE_AS_PATH,          "AS Path"},

+    { BGPTYPE_AS4_PATH,         "AS4 Path"},

     { BGPTYPE_NEXT_HOP,         "Next Hop"},
     { BGPTYPE_MULTI_EXIT_DISC,  "Multi Exit Discriminator"},
     { BGPTYPE_LOCAL_PREF,       "Local Preference"},
     { BGPTYPE_ATOMIC_AGGREGATE, "Atomic Aggregate"},
     { BGPTYPE_AGGREGATOR,       "Aggregator"},
     { BGPTYPE_NEXT_HOP,         "Next Hop"},
     { BGPTYPE_MULTI_EXIT_DISC,  "Multi Exit Discriminator"},
     { BGPTYPE_LOCAL_PREF,       "Local Preference"},
     { BGPTYPE_ATOMIC_AGGREGATE, "Atomic Aggregate"},
     { BGPTYPE_AGGREGATOR,       "Aggregator"},

+    { BGPTYPE_AGGREGATOR4,      "Aggregator4"},

     { BGPTYPE_COMMUNITIES,      "Community"},
     { BGPTYPE_ORIGINATOR_ID,    "Originator ID"},
     { BGPTYPE_CLUSTER_LIST,     "Cluster List"},
     { BGPTYPE_COMMUNITIES,      "Community"},
     { BGPTYPE_ORIGINATOR_ID,    "Originator ID"},
     { BGPTYPE_CLUSTER_LIST,     "Cluster List"},

-    { BGPTYPE_DPA,              "DPA"},
-    { BGPTYPE_ADVERTISERS,      "Advertisers"},
-    { BGPTYPE_RCID_PATH,        "RCID Path / Cluster ID"},

     { BGPTYPE_MP_REACH_NLRI,    "Multi-Protocol Reach NLRI"},
     { BGPTYPE_MP_UNREACH_NLRI,  "Multi-Protocol Unreach NLRI"},
     { BGPTYPE_EXTD_COMMUNITIES, "Extended Community"},
     { BGPTYPE_PMSI_TUNNEL,      "PMSI Tunnel"},
     { BGPTYPE_MP_REACH_NLRI,    "Multi-Protocol Reach NLRI"},
     { BGPTYPE_MP_UNREACH_NLRI,  "Multi-Protocol Unreach NLRI"},
     { BGPTYPE_EXTD_COMMUNITIES, "Extended Community"},
     { BGPTYPE_PMSI_TUNNEL,      "PMSI Tunnel"},

+    { BGPTYPE_TUNNEL_ENCAP,     "Tunnel Encapsulation"},
+    { BGPTYPE_TRAFFIC_ENG,      "Traffic Engineering"},
+    { BGPTYPE_IPV6_EXTD_COMMUNITIES, "IPv6 Extended Community"},
+    { BGPTYPE_AIGP,             "Accumulated IGP Metric"},
+    { BGPTYPE_PE_DISTINGUISHER_LABEL, "PE Distinguisher Label"},
+    { BGPTYPE_ENTROPY_LABEL,    "Entropy Label"},
+    { BGPTYPE_LARGE_COMMUNITY,  "Large Community"},

     { BGPTYPE_ATTR_SET,         "Attribute Set"},
     { 255,                      "Reserved for development"},
     { 0, NULL}
     { BGPTYPE_ATTR_SET,         "Attribute Set"},
     { 255,                      "Reserved for development"},
     { 0, NULL}


@@ -178,7 +191,10 @@ static struct tok bgp_attr_values[] = {
 #define BGP_CONFED_AS_SEQUENCE 3 /* draft-ietf-idr-rfc3065bis-01 */
 #define BGP_CONFED_AS_SET      4 /* draft-ietf-idr-rfc3065bis-01  */
 
 #define BGP_CONFED_AS_SEQUENCE 3 /* draft-ietf-idr-rfc3065bis-01 */
 #define BGP_CONFED_AS_SET      4 /* draft-ietf-idr-rfc3065bis-01  */
 

-static struct tok bgp_as_path_segment_open_values[] = {
+#define BGP_AS_SEG_TYPE_MIN    BGP_AS_SET
+#define BGP_AS_SEG_TYPE_MAX    BGP_CONFED_AS_SET
+
+static const struct tok bgp_as_path_segment_open_values[] = {

     { BGP_AS_SEQUENCE,         ""},
     { BGP_AS_SET,              "{ "},
     { BGP_CONFED_AS_SEQUENCE,  "( "},
     { BGP_AS_SEQUENCE,         ""},
     { BGP_AS_SET,              "{ "},
     { BGP_CONFED_AS_SEQUENCE,  "( "},


@@ -186,7 +202,7 @@ static struct tok bgp_as_path_segment_open_values[] = {
     { 0, NULL}
 };
 
     { 0, NULL}
 };
 

-static struct tok bgp_as_path_segment_close_values[] = {
+static const struct tok bgp_as_path_segment_close_values[] = {

     { BGP_AS_SEQUENCE,         ""},
     { BGP_AS_SET,              "}"},
     { BGP_CONFED_AS_SEQUENCE,  ")"},
     { BGP_AS_SEQUENCE,         ""},
     { BGP_AS_SET,              "}"},
     { BGP_CONFED_AS_SEQUENCE,  ")"},


@@ -197,28 +213,43 @@ static struct tok bgp_as_path_segment_close_values[] = {
 #define BGP_OPT_AUTH                    1
 #define BGP_OPT_CAP                     2
 
 #define BGP_OPT_AUTH                    1
 #define BGP_OPT_CAP                     2
 

-
-static struct tok bgp_opt_values[] = {
+static const struct tok bgp_opt_values[] = {

     { BGP_OPT_AUTH,             "Authentication Information"},
     { BGP_OPT_CAP,              "Capabilities Advertisement"},
     { 0, NULL}
 };
 
     { BGP_OPT_AUTH,             "Authentication Information"},
     { BGP_OPT_CAP,              "Capabilities Advertisement"},
     { 0, NULL}
 };
 

-#define BGP_CAPCODE_MP                  1
-#define BGP_CAPCODE_RR                  2
-#define BGP_CAPCODE_ORF                 3 /* XXX */
-#define BGP_CAPCODE_RESTART            64 /* draft-ietf-idr-restart-05  */
-#define BGP_CAPCODE_AS_NEW             65 /* XXX */
-#define BGP_CAPCODE_DYN_CAP            67 /* XXX */
+#define BGP_CAPCODE_MP                  1 /* RFC2858 */
+#define BGP_CAPCODE_RR                  2 /* RFC2918 */
+#define BGP_CAPCODE_ORF                 3 /* RFC5291 */
+#define BGP_CAPCODE_MR                  4 /* RFC3107 */
+#define BGP_CAPCODE_EXT_NH              5 /* RFC5549 */
+#define BGP_CAPCODE_EXT_MSG             6 /* RFC8654 */
+#define BGP_CAPCODE_ML                  8 /* RFC8277 */
+#define BGP_CAPCODE_RESTART            64 /* RFC4724  */
+#define BGP_CAPCODE_AS_NEW             65 /* RFC6793 */
+#define BGP_CAPCODE_DYN_CAP            67 /* draft-ietf-idr-dynamic-cap */
+#define BGP_CAPCODE_MULTISESS          68 /* draft-ietf-idr-bgp-multisession */
+#define BGP_CAPCODE_ADD_PATH           69 /* RFC7911 */
+#define BGP_CAPCODE_ENH_RR             70 /* RFC7313 */
+#define BGP_CAPCODE_LLGR               71 /* draft-uttaro-idr-bgp-persistence-05 */

 #define BGP_CAPCODE_RR_CISCO          128
 
 #define BGP_CAPCODE_RR_CISCO          128
 

-static struct tok bgp_capcode_values[] = {
+static const struct tok bgp_capcode_values[] = {

     { BGP_CAPCODE_MP,           "Multiprotocol Extensions"},
     { BGP_CAPCODE_RR,           "Route Refresh"},
     { BGP_CAPCODE_ORF,          "Cooperative Route Filtering"},
     { BGP_CAPCODE_MP,           "Multiprotocol Extensions"},
     { BGP_CAPCODE_RR,           "Route Refresh"},
     { BGP_CAPCODE_ORF,          "Cooperative Route Filtering"},

+    { BGP_CAPCODE_MR,           "Multiple Routes to a Destination"},
+    { BGP_CAPCODE_EXT_NH,       "Extended Next Hop Encoding"},
+    { BGP_CAPCODE_EXT_MSG,      "BGP Extended Message"},
+    { BGP_CAPCODE_ML,           "Multiple Labels"},

     { BGP_CAPCODE_RESTART,      "Graceful Restart"},
     { BGP_CAPCODE_AS_NEW,       "32-Bit AS Number"},
     { BGP_CAPCODE_DYN_CAP,      "Dynamic Capability"},
     { BGP_CAPCODE_RESTART,      "Graceful Restart"},
     { BGP_CAPCODE_AS_NEW,       "32-Bit AS Number"},
     { BGP_CAPCODE_DYN_CAP,      "Dynamic Capability"},

+    { BGP_CAPCODE_MULTISESS,    "Multisession BGP"},
+    { BGP_CAPCODE_ADD_PATH,     "Multiple Paths"},
+    { BGP_CAPCODE_ENH_RR,       "Enhanced Route Refresh"},
+    { BGP_CAPCODE_LLGR,         "Long-lived Graceful Restart"},

     { BGP_CAPCODE_RR_CISCO,     "Route Refresh (Cisco)"},
     { 0, NULL}
 };
     { BGP_CAPCODE_RR_CISCO,     "Route Refresh (Cisco)"},
     { 0, NULL}
 };


@@ -231,7 +262,7 @@ static struct tok bgp_capcode_values[] = {
 #define BGP_NOTIFY_MAJOR_CEASE          6
 #define BGP_NOTIFY_MAJOR_CAP            7
 
 #define BGP_NOTIFY_MAJOR_CEASE          6
 #define BGP_NOTIFY_MAJOR_CAP            7
 

-static struct tok bgp_notify_major_values[] = {
+static const struct tok bgp_notify_major_values[] = {

     { BGP_NOTIFY_MAJOR_MSG,     "Message Header Error"},
     { BGP_NOTIFY_MAJOR_OPEN,    "OPEN Message Error"},
     { BGP_NOTIFY_MAJOR_UPDATE,  "UPDATE Message Error"},
     { BGP_NOTIFY_MAJOR_MSG,     "Message Header Error"},
     { BGP_NOTIFY_MAJOR_OPEN,    "OPEN Message Error"},
     { BGP_NOTIFY_MAJOR_UPDATE,  "UPDATE Message Error"},


@@ -242,27 +273,29 @@ static struct tok bgp_notify_major_values[] = {
     { 0, NULL}
 };
 
     { 0, NULL}
 };
 

-/* draft-ietf-idr-cease-subcode-02 */
+/* RFC 4486 */

 #define BGP_NOTIFY_MINOR_CEASE_MAXPRFX  1
 #define BGP_NOTIFY_MINOR_CEASE_MAXPRFX  1

-static struct tok bgp_notify_minor_cease_values[] = {
+#define BGP_NOTIFY_MINOR_CEASE_SHUT     2
+#define BGP_NOTIFY_MINOR_CEASE_RESET    4
+static const struct tok bgp_notify_minor_cease_values[] = {

     { BGP_NOTIFY_MINOR_CEASE_MAXPRFX, "Maximum Number of Prefixes Reached"},
     { BGP_NOTIFY_MINOR_CEASE_MAXPRFX, "Maximum Number of Prefixes Reached"},

-    { 2,                        "Administratively Shutdown"},
+    { BGP_NOTIFY_MINOR_CEASE_SHUT,    "Administrative Shutdown"},

     { 3,                        "Peer Unconfigured"},
     { 3,                        "Peer Unconfigured"},

-    { 4,                        "Administratively Reset"},
+    { BGP_NOTIFY_MINOR_CEASE_RESET,   "Administrative Reset"},

     { 5,                        "Connection Rejected"},
     { 6,                        "Other Configuration Change"},
     { 7,                        "Connection Collision Resolution"},
     { 0, NULL}
 };
 
     { 5,                        "Connection Rejected"},
     { 6,                        "Other Configuration Change"},
     { 7,                        "Connection Collision Resolution"},
     { 0, NULL}
 };
 

-static struct tok bgp_notify_minor_msg_values[] = {
+static const struct tok bgp_notify_minor_msg_values[] = {

     { 1,                        "Connection Not Synchronized"},
     { 2,                        "Bad Message Length"},
     { 3,                        "Bad Message Type"},
     { 0, NULL}
 };
 
     { 1,                        "Connection Not Synchronized"},
     { 2,                        "Bad Message Length"},
     { 3,                        "Bad Message Type"},
     { 0, NULL}
 };
 

-static struct tok bgp_notify_minor_open_values[] = {
+static const struct tok bgp_notify_minor_open_values[] = {

     { 1,                        "Unsupported Version Number"},
     { 2,                        "Bad Peer AS"},
     { 3,                        "Bad BGP Identifier"},
     { 1,                        "Unsupported Version Number"},
     { 2,                        "Bad Peer AS"},
     { 3,                        "Bad BGP Identifier"},


@@ -273,7 +306,7 @@ static struct tok bgp_notify_minor_open_values[] = {
     { 0, NULL}
 };
 
     { 0, NULL}
 };
 

-static struct tok bgp_notify_minor_update_values[] = {
+static const struct tok bgp_notify_minor_update_values[] = {

     { 1,                        "Malformed Attribute List"},
     { 2,                        "Unrecognized Well-known Attribute"},
     { 3,                        "Missing Well-known Attribute"},
     { 1,                        "Malformed Attribute List"},
     { 2,                        "Unrecognized Well-known Attribute"},
     { 3,                        "Missing Well-known Attribute"},


@@ -288,7 +321,15 @@ static struct tok bgp_notify_minor_update_values[] = {
     { 0, NULL}
 };
 
     { 0, NULL}
 };
 

-static struct tok bgp_notify_minor_cap_values[] = {
+static const struct tok bgp_notify_minor_fsm_values[] = {
+    { 0,                        "Unspecified Error"},
+    { 1,                        "In OpenSent State"},
+    { 2,                        "In OpenConfirm State"},
+    { 3,                        "In Established State"},
+    { 0, NULL }
+};
+
+static const struct tok bgp_notify_minor_cap_values[] = {

     { 1,                        "Invalid Action Value" },
     { 2,                        "Invalid Capability Length" },
     { 3,                        "Malformed Capability Value" },
     { 1,                        "Invalid Action Value" },
     { 2,                        "Invalid Capability Length" },
     { 3,                        "Malformed Capability Value" },


@@ -296,7 +337,7 @@ static struct tok bgp_notify_minor_cap_values[] = {
     { 0, NULL }
 };
 
     { 0, NULL }
 };
 

-static struct tok bgp_origin_values[] = {
+static const struct tok bgp_origin_values[] = {

     { 0,                        "IGP"},
     { 1,                        "EGP"},
     { 2,                        "Incomplete"},
     { 0,                        "IGP"},
     { 1,                        "EGP"},
     { 2,                        "Incomplete"},


@@ -311,7 +352,7 @@ static struct tok bgp_origin_values[] = {
 #define BGP_PMSI_TUNNEL_INGRESS   6
 #define BGP_PMSI_TUNNEL_LDP_MP2MP 7
 
 #define BGP_PMSI_TUNNEL_INGRESS   6
 #define BGP_PMSI_TUNNEL_LDP_MP2MP 7
 

-static struct tok bgp_pmsi_tunnel_values[] = {
+static const struct tok bgp_pmsi_tunnel_values[] = {

     { BGP_PMSI_TUNNEL_RSVP_P2MP, "RSVP-TE P2MP LSP"},
     { BGP_PMSI_TUNNEL_LDP_P2MP, "LDP P2MP LSP"},
     { BGP_PMSI_TUNNEL_PIM_SSM, "PIM-SSM Tree"},
     { BGP_PMSI_TUNNEL_RSVP_P2MP, "RSVP-TE P2MP LSP"},
     { BGP_PMSI_TUNNEL_LDP_P2MP, "LDP P2MP LSP"},
     { BGP_PMSI_TUNNEL_PIM_SSM, "PIM-SSM Tree"},


@@ -322,34 +363,46 @@ static struct tok bgp_pmsi_tunnel_values[] = {
     { 0, NULL}
 };
 
     { 0, NULL}
 };
 

-static struct tok bgp_pmsi_flag_values[] = {
+static const struct tok bgp_pmsi_flag_values[] = {

     { 0x01, "Leaf Information required"},
     { 0, NULL}
 };
 
     { 0x01, "Leaf Information required"},
     { 0, NULL}
 };
 

+#define BGP_AIGP_TLV 1
+
+static const struct tok bgp_aigp_values[] = {
+    { BGP_AIGP_TLV, "AIGP"},
+    { 0, NULL}
+};

 
 /* Subsequent address family identifier, RFC2283 section 7 */
 #define SAFNUM_RES                      0
 #define SAFNUM_UNICAST                  1
 #define SAFNUM_MULTICAST                2
 
 /* Subsequent address family identifier, RFC2283 section 7 */
 #define SAFNUM_RES                      0
 #define SAFNUM_UNICAST                  1
 #define SAFNUM_MULTICAST                2

-#define SAFNUM_UNIMULTICAST             3
+#define SAFNUM_UNIMULTICAST             3       /* deprecated now */

 /* labeled BGP RFC3107 */
 #define SAFNUM_LABUNICAST               4
 /* labeled BGP RFC3107 */
 #define SAFNUM_LABUNICAST               4

-#define SAFNUM_TUNNEL                   64 /* XXX */
-#define SAFNUM_VPLS                     65 /* XXX */
-#define SAFNUM_MDT                      66 /* XXX */
-/* Section 4.3.4 of draft-rosen-rfc2547bis-03.txt  */
+/* RFC6514 */
+#define SAFNUM_MULTICAST_VPN            5
+/* draft-nalawade-kapoor-tunnel-safi */
+#define SAFNUM_TUNNEL                   64
+/* RFC4761 */
+#define SAFNUM_VPLS                     65
+/* RFC6037 */
+#define SAFNUM_MDT                      66
+/* RFC7432 */
+#define SAFNUM_EVPN                     70
+/* RFC4364 */

 #define SAFNUM_VPNUNICAST               128
 #define SAFNUM_VPNUNICAST               128

+/* RFC6513 */

 #define SAFNUM_VPNMULTICAST             129
 #define SAFNUM_VPNMULTICAST             129

-#define SAFNUM_VPNUNIMULTICAST          130
-/* draft-marques-ppvpn-rt-constrain-01.txt */
+#define SAFNUM_VPNUNIMULTICAST          130     /* deprecated now */
+/* RFC4684 */

 #define SAFNUM_RT_ROUTING_INFO          132
 #define SAFNUM_RT_ROUTING_INFO          132

-/* draft-ietf-l3vpn-2547bis-mcast-bgp-02.txt */
-#define SAFNUM_MULTICAST_VPN            139

 
 #define BGP_VPN_RD_LEN                  8
 
 
 #define BGP_VPN_RD_LEN                  8
 

-static struct tok bgp_safi_values[] = {
+static const struct tok bgp_safi_values[] = {

     { SAFNUM_RES,               "Reserved"},
     { SAFNUM_UNICAST,           "Unicast"},
     { SAFNUM_MULTICAST,         "Multicast"},
     { SAFNUM_RES,               "Reserved"},
     { SAFNUM_UNICAST,           "Unicast"},
     { SAFNUM_MULTICAST,         "Multicast"},


@@ -358,6 +411,7 @@ static struct tok bgp_safi_values[] = {
     { SAFNUM_TUNNEL,            "Tunnel"},
     { SAFNUM_VPLS,              "VPLS"},
     { SAFNUM_MDT,               "MDT"},
     { SAFNUM_TUNNEL,            "Tunnel"},
     { SAFNUM_VPLS,              "VPLS"},
     { SAFNUM_MDT,               "MDT"},

+    { SAFNUM_EVPN,              "EVPN"},

     { SAFNUM_VPNUNICAST,        "labeled VPN Unicast"},
     { SAFNUM_VPNMULTICAST,      "labeled VPN Multicast"},
     { SAFNUM_VPNUNIMULTICAST,   "labeled VPN Unicast+Multicast"},
     { SAFNUM_VPNUNICAST,        "labeled VPN Unicast"},
     { SAFNUM_VPNMULTICAST,      "labeled VPN Multicast"},
     { SAFNUM_VPNUNIMULTICAST,   "labeled VPN Unicast+Multicast"},


@@ -367,11 +421,11 @@ static struct tok bgp_safi_values[] = {
 };
 
 /* well-known community */
 };
 
 /* well-known community */

-#define BGP_COMMUNITY_NO_EXPORT                        0xffffff01
-#define BGP_COMMUNITY_NO_ADVERT                        0xffffff02
-#define BGP_COMMUNITY_NO_EXPORT_SUBCONFED      0xffffff03
+#define BGP_COMMUNITY_NO_EXPORT              0xffffff01
+#define BGP_COMMUNITY_NO_ADVERT              0xffffff02
+#define BGP_COMMUNITY_NO_EXPORT_SUBCONFED    0xffffff03

 
 

-/* Extended community type - draft-ietf-idr-bgp-ext-communities-05 */
+/* Extended community type - RFC 4360 */

 #define BGP_EXT_COM_RT_0        0x0002  /* Route Target,Format AS(2bytes):AN(4bytes) */
 #define BGP_EXT_COM_RT_1        0x0102  /* Route Target,Format IP address:AN(2bytes) */
 #define BGP_EXT_COM_RT_2        0x0202  /* Route Target,Format AN(4bytes):local(2bytes) */
 #define BGP_EXT_COM_RT_0        0x0002  /* Route Target,Format AS(2bytes):AN(4bytes) */
 #define BGP_EXT_COM_RT_1        0x0102  /* Route Target,Format IP address:AN(2bytes) */
 #define BGP_EXT_COM_RT_2        0x0202  /* Route Target,Format AN(4bytes):local(2bytes) */


@@ -380,39 +434,43 @@ static struct tok bgp_safi_values[] = {
 #define BGP_EXT_COM_RO_2        0x0203  /* Route Origin,Format AN(4bytes):local(2bytes) */
 #define BGP_EXT_COM_LINKBAND    0x4004  /* Link Bandwidth,Format AS(2B):Bandwidth(4B) */
                                         /* rfc2547 bgp-mpls-vpns */
 #define BGP_EXT_COM_RO_2        0x0203  /* Route Origin,Format AN(4bytes):local(2bytes) */
 #define BGP_EXT_COM_LINKBAND    0x4004  /* Link Bandwidth,Format AS(2B):Bandwidth(4B) */
                                         /* rfc2547 bgp-mpls-vpns */

-#define BGP_EXT_COM_CISCO_MCAST 0x0009  /* cisco proprietary */
-

 #define BGP_EXT_COM_VPN_ORIGIN  0x0005  /* OSPF Domain ID / VPN of Origin  - draft-rosen-vpns-ospf-bgp-mpls */
 #define BGP_EXT_COM_VPN_ORIGIN  0x0005  /* OSPF Domain ID / VPN of Origin  - draft-rosen-vpns-ospf-bgp-mpls */

-#define BGP_EXT_COM_VPN_ORIGIN2 0x0105  /* duplicate - keep for backwards compatability */
-#define BGP_EXT_COM_VPN_ORIGIN3 0x0205  /* duplicate - keep for backwards compatability */
-#define BGP_EXT_COM_VPN_ORIGIN4 0x8005  /* duplicate - keep for backwards compatability */
+#define BGP_EXT_COM_VPN_ORIGIN2 0x0105  /* duplicate - keep for backwards compatibility */
+#define BGP_EXT_COM_VPN_ORIGIN3 0x0205  /* duplicate - keep for backwards compatibility */
+#define BGP_EXT_COM_VPN_ORIGIN4 0x8005  /* duplicate - keep for backwards compatibility */

 
 #define BGP_EXT_COM_OSPF_RTYPE  0x0306  /* OSPF Route Type,Format Area(4B):RouteType(1B):Options(1B) */
 
 #define BGP_EXT_COM_OSPF_RTYPE  0x0306  /* OSPF Route Type,Format Area(4B):RouteType(1B):Options(1B) */

-#define BGP_EXT_COM_OSPF_RTYPE2 0x8000  /* duplicate - keep for backwards compatability */
+#define BGP_EXT_COM_OSPF_RTYPE2 0x8000  /* duplicate - keep for backwards compatibility */
+#define BGP_EXT_COM_ENCAP       0x030c  /* rfc5512 */

 
 #define BGP_EXT_COM_OSPF_RID    0x0107  /* OSPF Router ID,Format RouterID(4B):Unused(2B) */
 
 #define BGP_EXT_COM_OSPF_RID    0x0107  /* OSPF Router ID,Format RouterID(4B):Unused(2B) */

-#define BGP_EXT_COM_OSPF_RID2   0x8001  /* duplicate - keep for backwards compatability */ 
+#define BGP_EXT_COM_OSPF_RID2   0x8001  /* duplicate - keep for backwards compatibility */

 
 #define BGP_EXT_COM_L2INFO      0x800a  /* draft-kompella-ppvpn-l2vpn */
 
 
 #define BGP_EXT_COM_L2INFO      0x800a  /* draft-kompella-ppvpn-l2vpn */
 

-#define BGP_EXT_COM_SOURCE_AS   0x0010  /* draft-ietf-l3vpn-2547bis-mcast-bgp-02.txt */
-#define BGP_EXT_COM_VRF_RT_IMP  0x0108  /* draft-ietf-l3vpn-2547bis-mcast-bgp-02.txt */
-
-/* http://www.cisco.com/en/US/tech/tk436/tk428/technologies_tech_note09186a00801eb09a.shtml  */
-#define BGP_EXT_COM_EIGRP_GEN   0x8800
-#define BGP_EXT_COM_EIGRP_METRIC_AS_DELAY  0x8801
-#define BGP_EXT_COM_EIGRP_METRIC_REL_NH_BW 0x8802
-#define BGP_EXT_COM_EIGRP_METRIC_LOAD_MTU  0x8803
-#define BGP_EXT_COM_EIGRP_EXT_REMAS_REMID  0x8804
+#define BGP_EXT_COM_SOURCE_AS   0x0009  /* RFC-ietf-l3vpn-2547bis-mcast-bgp-08.txt */
+#define BGP_EXT_COM_VRF_RT_IMP  0x010b  /* RFC-ietf-l3vpn-2547bis-mcast-bgp-08.txt */
+#define BGP_EXT_COM_L2VPN_RT_0  0x000a  /* L2VPN Identifier,Format AS(2bytes):AN(4bytes) */
+#define BGP_EXT_COM_L2VPN_RT_1  0xF10a  /* L2VPN Identifier,Format IP address:AN(2bytes) */
+
+/* https://www.cisco.com/en/US/tech/tk436/tk428/technologies_tech_note09186a00801eb09a.shtml  */
+#define BGP_EXT_COM_EIGRP_GEN                    0x8800
+#define BGP_EXT_COM_EIGRP_METRIC_AS_DELAY        0x8801
+#define BGP_EXT_COM_EIGRP_METRIC_REL_NH_BW       0x8802
+#define BGP_EXT_COM_EIGRP_METRIC_LOAD_MTU        0x8803
+#define BGP_EXT_COM_EIGRP_EXT_REMAS_REMID        0x8804

 #define BGP_EXT_COM_EIGRP_EXT_REMPROTO_REMMETRIC 0x8805
 
 #define BGP_EXT_COM_EIGRP_EXT_REMPROTO_REMMETRIC 0x8805
 

-static struct tok bgp_extd_comm_flag_values[] = {
+/* Optional Parameters */
+#define BGP_OPEN_NON_EXT_OPT_TYPE_EXTENDED_LENGTH 255 /* Non-Ext OP Type */
+
+static const struct tok bgp_extd_comm_flag_values[] = {

     { 0x8000,                  "vendor-specific"},
     { 0x4000,                  "non-transitive"},
     { 0, NULL},
 };
 
     { 0x8000,                  "vendor-specific"},
     { 0x4000,                  "non-transitive"},
     { 0, NULL},
 };
 

-static struct tok bgp_extd_comm_subtype_values[] = {
+static const struct tok bgp_extd_comm_subtype_values[] = {

     { BGP_EXT_COM_RT_0,        "target"},
     { BGP_EXT_COM_RT_1,        "target"},
     { BGP_EXT_COM_RT_2,        "target"},
     { BGP_EXT_COM_RT_0,        "target"},
     { BGP_EXT_COM_RT_1,        "target"},
     { BGP_EXT_COM_RT_2,        "target"},


@@ -420,24 +478,66 @@ static struct tok bgp_extd_comm_subtype_values[] = {
     { BGP_EXT_COM_RO_1,        "origin"},
     { BGP_EXT_COM_RO_2,        "origin"},
     { BGP_EXT_COM_LINKBAND,    "link-BW"},
     { BGP_EXT_COM_RO_1,        "origin"},
     { BGP_EXT_COM_RO_2,        "origin"},
     { BGP_EXT_COM_LINKBAND,    "link-BW"},

-    { BGP_EXT_COM_CISCO_MCAST, "mdt-group"},

     { BGP_EXT_COM_VPN_ORIGIN,  "ospf-domain"},
     { BGP_EXT_COM_VPN_ORIGIN2, "ospf-domain"},
     { BGP_EXT_COM_VPN_ORIGIN3, "ospf-domain"},
     { BGP_EXT_COM_VPN_ORIGIN4, "ospf-domain"},
     { BGP_EXT_COM_OSPF_RTYPE,  "ospf-route-type"},
     { BGP_EXT_COM_OSPF_RTYPE2, "ospf-route-type"},
     { BGP_EXT_COM_VPN_ORIGIN,  "ospf-domain"},
     { BGP_EXT_COM_VPN_ORIGIN2, "ospf-domain"},
     { BGP_EXT_COM_VPN_ORIGIN3, "ospf-domain"},
     { BGP_EXT_COM_VPN_ORIGIN4, "ospf-domain"},
     { BGP_EXT_COM_OSPF_RTYPE,  "ospf-route-type"},
     { BGP_EXT_COM_OSPF_RTYPE2, "ospf-route-type"},

+    { BGP_EXT_COM_ENCAP,       "encapsulation"},

     { BGP_EXT_COM_OSPF_RID,    "ospf-router-id"},
     { BGP_EXT_COM_OSPF_RID2,   "ospf-router-id"},
     { BGP_EXT_COM_OSPF_RID,    "ospf-router-id"},
     { BGP_EXT_COM_OSPF_RID2,   "ospf-router-id"},

-    { BGP_EXT_COM_L2INFO,      "layer2-info"}, 
-    { BGP_EXT_COM_EIGRP_GEN , "eigrp-general-route (flag, tag)" },
-    { BGP_EXT_COM_EIGRP_METRIC_AS_DELAY , "eigrp-route-metric (AS, delay)" },
-    { BGP_EXT_COM_EIGRP_METRIC_REL_NH_BW , "eigrp-route-metric (reliability, nexthop, bandwidth)" },
-    { BGP_EXT_COM_EIGRP_METRIC_LOAD_MTU , "eigrp-route-metric (load, MTU)" },
-    { BGP_EXT_COM_EIGRP_EXT_REMAS_REMID , "eigrp-external-route (remote-AS, remote-ID)" },
-    { BGP_EXT_COM_EIGRP_EXT_REMPROTO_REMMETRIC , "eigrp-external-route (remote-proto, remote-metric)" },
+    { BGP_EXT_COM_L2INFO,      "layer2-info"},
+    { BGP_EXT_COM_EIGRP_GEN,   "eigrp-general-route (flag, tag)" },
+    { BGP_EXT_COM_EIGRP_METRIC_AS_DELAY, "eigrp-route-metric (AS, delay)" },
+    { BGP_EXT_COM_EIGRP_METRIC_REL_NH_BW, "eigrp-route-metric (reliability, nexthop, bandwidth)" },
+    { BGP_EXT_COM_EIGRP_METRIC_LOAD_MTU, "eigrp-route-metric (load, MTU)" },
+    { BGP_EXT_COM_EIGRP_EXT_REMAS_REMID, "eigrp-external-route (remote-AS, remote-ID)" },
+    { BGP_EXT_COM_EIGRP_EXT_REMPROTO_REMMETRIC, "eigrp-external-route (remote-proto, remote-metric)" },

     { BGP_EXT_COM_SOURCE_AS, "source-AS" },
     { BGP_EXT_COM_VRF_RT_IMP, "vrf-route-import"},
     { BGP_EXT_COM_SOURCE_AS, "source-AS" },
     { BGP_EXT_COM_VRF_RT_IMP, "vrf-route-import"},

+    { BGP_EXT_COM_L2VPN_RT_0, "l2vpn-id"},
+    { BGP_EXT_COM_L2VPN_RT_1, "l2vpn-id"},
+    { 0, NULL},
+};
+
+/* RFC RFC5512 BGP Tunnel Encapsulation Attribute Tunnel Types */
+#define BGP_ENCAP_TUNNEL_L2TPV3_IP  1
+#define BGP_ENCAP_TUNNEL_GRE        2
+#define BGP_ENCAP_TUNNEL_TRANSMIT   3
+#define BGP_ENCAP_TUNNEL_IPSEC      4
+#define BGP_ENCAP_TUNNEL_IP_IPSEC   5
+#define BGP_ENCAP_TUNNEL_MPLS_IP    6
+#define BGP_ENCAP_TUNNEL_IP_IP      7
+#define BGP_ENCAP_TUNNEL_VXLAN      8
+#define BGP_ENCAP_TUNNEL_NVGRE      9
+#define BGP_ENCAP_TUNNEL_MPLS       10
+#define BGP_ENCAP_TUNNEL_MPLS_GRE   11
+#define BGP_ENCAP_TUNNEL_VXLAN_GPE  12
+#define BGP_ENCAP_TUNNEL_MPLS_UDP   13
+#define BGP_ENCAP_TUNNEL_IPV6       14
+#define BGP_ENCAP_TUNNEL_SR_TE      15
+#define BGP_ENCAP_TUNNEL_BARE       16
+#define BGP_ENCAP_TUNNEL_SR         17
+
+static const struct tok bgp_extd_comm_encap_tunnel_values[] = {
+    { BGP_ENCAP_TUNNEL_L2TPV3_IP,    "L2TPv3 over IP"},
+    { BGP_ENCAP_TUNNEL_GRE,          "GRE"},
+    { BGP_ENCAP_TUNNEL_TRANSMIT,     "Transmit Tunnel"},
+    { BGP_ENCAP_TUNNEL_IPSEC,        "IPsec"},
+    { BGP_ENCAP_TUNNEL_IP_IPSEC,     "IP in IP with IPsec"},
+    { BGP_ENCAP_TUNNEL_MPLS_IP,      "MPLS in IP with IPsec"},
+    { BGP_ENCAP_TUNNEL_IP_IP,        "IP in IP"},
+    { BGP_ENCAP_TUNNEL_VXLAN,        "VXLAN"},
+    { BGP_ENCAP_TUNNEL_NVGRE,        "NVGRE"},
+    { BGP_ENCAP_TUNNEL_MPLS,         "MPLS"},
+    { BGP_ENCAP_TUNNEL_MPLS_GRE,     "MPLS in GRE"},
+    { BGP_ENCAP_TUNNEL_VXLAN_GPE,    "VXLAN GPE"},
+    { BGP_ENCAP_TUNNEL_MPLS_UDP,     "MPLS in UDP"},
+    { BGP_ENCAP_TUNNEL_IPV6,         "IPv6"},
+    { BGP_ENCAP_TUNNEL_SR_TE,        "SR TE"},
+    { BGP_ENCAP_TUNNEL_BARE,         "Bare"},
+    { BGP_ENCAP_TUNNEL_SR,           "SR"},

     { 0, NULL},
 };
 
     { 0, NULL},
 };
 


@@ -450,116 +550,257 @@ static struct tok bgp_extd_comm_subtype_values[] = {
 #define BGP_OSPF_RTYPE_SHAM     129 /* OSPF-MPLS-VPN Sham link */
 #define BGP_OSPF_RTYPE_METRIC_TYPE 0x1 /* LSB of RTYPE Options Field */
 
 #define BGP_OSPF_RTYPE_SHAM     129 /* OSPF-MPLS-VPN Sham link */
 #define BGP_OSPF_RTYPE_METRIC_TYPE 0x1 /* LSB of RTYPE Options Field */
 

-static struct tok bgp_extd_comm_ospf_rtype_values[] = {
-  { BGP_OSPF_RTYPE_RTR, "Router" },  
-  { BGP_OSPF_RTYPE_NET, "Network" },  
-  { BGP_OSPF_RTYPE_SUM, "Summary" },  
-  { BGP_OSPF_RTYPE_EXT, "External" },  
+static const struct tok bgp_extd_comm_ospf_rtype_values[] = {
+  { BGP_OSPF_RTYPE_RTR, "Router" },
+  { BGP_OSPF_RTYPE_NET, "Network" },
+  { BGP_OSPF_RTYPE_SUM, "Summary" },
+  { BGP_OSPF_RTYPE_EXT, "External" },

   { BGP_OSPF_RTYPE_NSSA,"NSSA External" },
   { BGP_OSPF_RTYPE_NSSA,"NSSA External" },

-  { BGP_OSPF_RTYPE_SHAM,"MPLS-VPN Sham" },  
+  { BGP_OSPF_RTYPE_SHAM,"MPLS-VPN Sham" },

   { 0, NULL },
 };
 
   { 0, NULL },
 };
 

+/* ADD-PATH Send/Receive field values */
+static const struct tok bgp_add_path_recvsend[] = {
+    { 1, "Receive" },
+    { 2, "Send" },
+    { 3, "Both" },
+    { 0, NULL },
+};
+
+#define AS_STR_SIZE sizeof("xxxxx.xxxxx")
+
+/*
+ * as_printf
+ *
+ * Convert an AS number into a string and return string pointer.
+ *
+ * Depending on bflag is set or not, AS number is converted into ASDOT notation
+ * or plain number notation.
+ *
+ */
+static char *
+as_printf(netdissect_options *ndo,
+          char *str, size_t size, u_int asnum)
+{
+    if (!ndo->ndo_bflag || asnum <= 0xFFFF) {
+        snprintf(str, size, "%u", asnum);
+    } else {
+        snprintf(str, size, "%u.%u", asnum >> 16, asnum & 0xFFFF);
+    }
+    return str;
+}
+
+#define ITEMCHECK(minlen) if (itemlen < minlen) goto badtlv;
+

 int
 int

-decode_prefix4(const u_char *pptr, char *buf, u_int buflen)
+decode_prefix4(netdissect_options *ndo,
+               const u_char *pptr, u_int itemlen, char *buf, size_t buflen)

 {
 {

-       struct in_addr addr;
-       u_int plen;
-
-       TCHECK(pptr[0]);
-       plen = pptr[0];
-       if (32 < plen)
-               return -1;
-
-       memset(&addr, 0, sizeof(addr));
-       TCHECK2(pptr[1], (plen + 7) / 8);
-       memcpy(&addr, &pptr[1], (plen + 7) / 8);
-       if (plen % 8) {
-               ((u_char *)&addr)[(plen + 7) / 8 - 1] &=
-                       ((0xff00 >> (plen % 8)) & 0xff);
-       }
-       snprintf(buf, buflen, "%s/%d", getname((u_char *)&addr), plen);
-       return 1 + (plen + 7) / 8;
+    nd_ipv4 addr;
+    u_int plen, plenbytes;
+
+    ITEMCHECK(1);
+    plen = GET_U_1(pptr);
+    if (32 < plen)
+        return -1;
+    itemlen -= 1;
+
+    memset(&addr, 0, sizeof(addr));
+    plenbytes = (plen + 7) / 8;
+    ITEMCHECK(plenbytes);
+    GET_CPY_BYTES(&addr, pptr + 1, plenbytes);
+    if (plen % 8) {
+        ((u_char *)&addr)[plenbytes - 1] &= ((0xff00 >> (plen % 8)) & 0xff);
+    }
+    snprintf(buf, buflen, "%s/%u", ipaddr_string(ndo, (const u_char *)&addr), plen);
+    return 1 + plenbytes;

 
 

-trunc:
-       return -2;
+badtlv:
+    return -2;

 }
 
 static int
 }
 
 static int

-decode_labeled_prefix4(const u_char *pptr, char *buf, u_int buflen)
+decode_labeled_prefix4(netdissect_options *ndo,
+                       const u_char *pptr, u_int itemlen, char *buf,
+                       size_t buflen)

 {
 {

-       struct in_addr addr;
-       u_int plen;
-
-       TCHECK(pptr[0]);
-       plen = pptr[0];   /* get prefix length */
-
-        /* this is one of the weirdnesses of rfc3107
-           the label length (actually the label + COS bits)
-           is added to the prefix length;
-           we also do only read out just one label -
-           there is no real application for advertisement of
-           stacked labels in a a single BGP message
-        */
-
-       if (24 > plen)
-               return -1;
-
-        plen-=24; /* adjust prefixlen - labellength */
-
-       if (32 < plen)
-               return -1;
-
-       memset(&addr, 0, sizeof(addr));
-       TCHECK2(pptr[4], (plen + 7) / 8);
-       memcpy(&addr, &pptr[4], (plen + 7) / 8);
-       if (plen % 8) {
-               ((u_char *)&addr)[(plen + 7) / 8 - 1] &=
-                       ((0xff00 >> (plen % 8)) & 0xff);
-       }
-        /* the label may get offsetted by 4 bits so lets shift it right */
-       snprintf(buf, buflen, "%s/%d, label:%u %s",
-                 getname((u_char *)&addr),
-                 plen,
-                 EXTRACT_24BITS(pptr+1)>>4,
-                 ((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
+    nd_ipv4 addr;
+    u_int plen, plenbytes;
+
+    /* prefix length and label = 4 bytes */
+    ND_TCHECK_4(pptr);
+    ITEMCHECK(4);
+    plen = GET_U_1(pptr);   /* get prefix length */
+
+    /* this is one of the weirdnesses of rfc3107
+       the label length (actually the label + COS bits)
+       is added to the prefix length;
+       we also do only read out just one label -
+       there is no real application for advertisement of
+       stacked labels in a single BGP message
+    */
+
+    if (24 > plen)
+        return -1;
+
+    plen-=24; /* adjust prefixlen - labellength */
+
+    if (32 < plen)
+        return -1;
+    itemlen -= 4;
+
+    memset(&addr, 0, sizeof(addr));
+    plenbytes = (plen + 7) / 8;
+    ITEMCHECK(plenbytes);
+    GET_CPY_BYTES(&addr, pptr + 4, plenbytes);
+    if (plen % 8) {
+        ((u_char *)&addr)[plenbytes - 1] &= ((0xff00 >> (plen % 8)) & 0xff);
+    }
+    /* the label may get offsetted by 4 bits so lets shift it right */
+    snprintf(buf, buflen, "%s/%u, label:%u %s",
+             ipaddr_string(ndo, (const u_char *)&addr),
+             plen,
+             GET_BE_U_3(pptr + 1)>>4,
+             ((GET_U_1(pptr + 3) & 1) == 0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );

 
 

-       return 4 + (plen + 7) / 8;
+    return 4 + plenbytes;

 
 trunc:
 
 trunc:

-       return -2;
+    return -2;
+
+badtlv:
+    return -3;
+}
+
+/*
+ * bgp_vpn_ip_print
+ *
+ * print an ipv4 or ipv6 address into a buffer dependent on address length.
+ */
+static char *
+bgp_vpn_ip_print(netdissect_options *ndo,
+                 const u_char *pptr, u_int addr_length)
+{
+
+    /* worst case string is s fully formatted v6 address */
+    static char addr[sizeof("1234:5678:89ab:cdef:1234:5678:89ab:cdef")];
+    char *pos = addr;
+
+    switch(addr_length) {
+    case (sizeof(nd_ipv4) << 3): /* 32 */
+        snprintf(pos, sizeof(addr), "%s", GET_IPADDR_STRING(pptr));
+        break;
+    case (sizeof(nd_ipv6) << 3): /* 128 */
+        snprintf(pos, sizeof(addr), "%s", GET_IP6ADDR_STRING(pptr));
+        break;
+    default:
+        snprintf(pos, sizeof(addr), "bogus address length %u", addr_length);
+        break;
+    }
+    pos += strlen(pos);
+
+    *(pos) = '\0';
+    return (addr);

 }
 
 }
 

-/* RDs and RTs share the same semantics
- * we use bgp_vpn_rd_print for
- * printing route targets inside a NLRI */
-char *
-bgp_vpn_rd_print (const u_char *pptr) {
+/*
+ * bgp_vpn_sg_print
+ *
+ * print an multicast s,g entry into a buffer.
+ * the s,g entry is encoded like this.
+ *
+ * +-----------------------------------+
+ * | Multicast Source Length (1 octet) |
+ * +-----------------------------------+
+ * |   Multicast Source (Variable)     |
+ * +-----------------------------------+
+ * |  Multicast Group Length (1 octet) |
+ * +-----------------------------------+
+ * |  Multicast Group   (Variable)     |
+ * +-----------------------------------+
+ *
+ * return the number of bytes read from the wire.
+ */
+static u_int
+bgp_vpn_sg_print(netdissect_options *ndo,
+                 const u_char *pptr, char *buf, size_t buflen)
+{
+    uint8_t addr_length;
+    u_int total_length, offset;
+
+    total_length = 0;
+
+    /* Source address length, encoded in bits */
+    addr_length = GET_U_1(pptr);
+    pptr++;
+
+    /* Source address */
+    ND_TCHECK_LEN(pptr, (addr_length >> 3));
+    total_length += (addr_length >> 3) + 1;
+    offset = (u_int)strlen(buf);
+    if (addr_length) {
+        snprintf(buf + offset, buflen - offset, ", Source %s",
+             bgp_vpn_ip_print(ndo, pptr, addr_length));
+        pptr += (addr_length >> 3);
+    }
+
+    /* Group address length, encoded in bits */
+    addr_length = GET_U_1(pptr);
+    pptr++;
+
+    /* Group address */
+    ND_TCHECK_LEN(pptr, (addr_length >> 3));
+    total_length += (addr_length >> 3) + 1;
+    offset = (u_int)strlen(buf);
+    if (addr_length) {
+        snprintf(buf + offset, buflen - offset, ", Group %s",
+             bgp_vpn_ip_print(ndo, pptr, addr_length));
+        pptr += (addr_length >> 3);
+    }
+
+trunc:
+    return (total_length);
+}

 
 

-   /* allocate space for the largest possible string */
-    static char rd[sizeof("xxxxxxxxxx:xxxxx (xxx.xxx.xxx.xxx:xxxxx)")];
+/* Print an RFC 4364 Route Distinguisher */
+const char *
+bgp_vpn_rd_print(netdissect_options *ndo,
+                 const u_char *pptr)
+{
+    /* allocate space for the largest possible string */
+    static char rd[sizeof("xxxxx.xxxxx:xxxxx (xxx.xxx.xxx.xxx:xxxxx)")];

     char *pos = rd;
     char *pos = rd;

+    /* allocate space for the largest possible string */
+    char astostr[AS_STR_SIZE];

 
     /* ok lets load the RD format */
 
     /* ok lets load the RD format */

-    switch (EXTRACT_16BITS(pptr)) {
+    switch (GET_BE_U_2(pptr)) {

 
 

-        /* AS:IP-address fmt*/

     case 0:
     case 0:

-        snprintf(pos, sizeof(rd) - (pos - rd), "%u:%u.%u.%u.%u",
-            EXTRACT_16BITS(pptr+2), *(pptr+4), *(pptr+5), *(pptr+6), *(pptr+7));
+        /* 2-byte-AS:number fmt */
+        snprintf(pos, sizeof(rd) - (pos - rd), "%u:%u (= %u.%u.%u.%u)",
+                    GET_BE_U_2(pptr + 2),
+                    GET_BE_U_4(pptr + 4),
+                    GET_U_1(pptr + 4), GET_U_1(pptr + 5),
+                    GET_U_1(pptr + 6), GET_U_1(pptr + 7));

         break;
         break;

-        /* IP-address:AS fmt*/

 
     case 1:
 
     case 1:

+        /* IP-address:AS fmt */

         snprintf(pos, sizeof(rd) - (pos - rd), "%u.%u.%u.%u:%u",
         snprintf(pos, sizeof(rd) - (pos - rd), "%u.%u.%u.%u:%u",

-            *(pptr+2), *(pptr+3), *(pptr+4), *(pptr+5), EXTRACT_16BITS(pptr+6));
+                    GET_U_1(pptr + 2), GET_U_1(pptr + 3),
+                    GET_U_1(pptr + 4), GET_U_1(pptr + 5),
+                    GET_BE_U_2(pptr + 6));

         break;
 
         break;
 

-        /* 4-byte-AS:number fmt*/

     case 2:
     case 2:

-        snprintf(pos, sizeof(rd) - (pos - rd), "%u:%u (%u.%u.%u.%u:%u)",
-            EXTRACT_32BITS(pptr+2), EXTRACT_16BITS(pptr+6),
-            *(pptr+2), *(pptr+3), *(pptr+4), *(pptr+5), EXTRACT_16BITS(pptr+6));
+        /* 4-byte-AS:number fmt */
+        snprintf(pos, sizeof(rd) - (pos - rd), "%s:%u (%u.%u.%u.%u:%u)",
+                    as_printf(ndo, astostr, sizeof(astostr), GET_BE_U_4(pptr + 2)),
+                    GET_BE_U_2(pptr + 6), GET_U_1(pptr + 2),
+                    GET_U_1(pptr + 3), GET_U_1(pptr + 4),
+                    GET_U_1(pptr + 5), GET_BE_U_2(pptr + 6));

         break;
     default:
         snprintf(pos, sizeof(rd) - (pos - rd), "unknown RD format");
         break;
     default:
         snprintf(pos, sizeof(rd) - (pos - rd), "unknown RD format");


@@ -570,79 +811,325 @@ bgp_vpn_rd_print (const u_char *pptr) {
     return (rd);
 }
 
     return (rd);
 }
 

-static int
-decode_rt_routing_info(const u_char *pptr, char *buf, u_int buflen)
+/*
+ * Print an RFC 4360 Extended Community.
+ */
+static void
+bgp_extended_community_print(netdissect_options *ndo,
+                             const u_char *pptr)

 {
 {

-       u_int8_t route_target[8];
-       u_int plen;
+    union { /* copy buffer for bandwidth values */
+        float f;
+        uint32_t i;
+    } bw;
+    /* allocate space for the largest possible string */
+    char astostr[AS_STR_SIZE];
+
+    switch (GET_BE_U_2(pptr)) {
+
+    case BGP_EXT_COM_RT_0:
+    case BGP_EXT_COM_RO_0:
+    case BGP_EXT_COM_L2VPN_RT_0:
+        ND_PRINT("%u:%u (= %s)",
+                 GET_BE_U_2(pptr + 2),
+                 GET_BE_U_4(pptr + 4),
+                 GET_IPADDR_STRING(pptr+4));
+        break;
+
+    case BGP_EXT_COM_RT_1:
+    case BGP_EXT_COM_RO_1:
+    case BGP_EXT_COM_L2VPN_RT_1:
+    case BGP_EXT_COM_VRF_RT_IMP:
+        ND_PRINT("%s:%u",
+                 GET_IPADDR_STRING(pptr+2),
+                 GET_BE_U_2(pptr + 6));
+        break;

 
 

-       TCHECK(pptr[0]);
-       plen = pptr[0];   /* get prefix length */
+    case BGP_EXT_COM_RT_2:
+        case BGP_EXT_COM_RO_2:
+            ND_PRINT("%s:%u",
+                     as_printf(ndo, astostr, sizeof(astostr),
+                     GET_BE_U_4(pptr + 2)), GET_BE_U_2(pptr + 6));
+            break;
+
+    case BGP_EXT_COM_LINKBAND:
+            bw.i = GET_BE_U_4(pptr + 4);
+            ND_PRINT("bandwidth: %.3f Mbps",
+                     bw.f*8/1000000);
+            break;

 
 

-       if (0 == plen)
-               return 1; /* default route target */
+    case BGP_EXT_COM_VPN_ORIGIN:
+    case BGP_EXT_COM_VPN_ORIGIN2:
+    case BGP_EXT_COM_VPN_ORIGIN3:
+    case BGP_EXT_COM_VPN_ORIGIN4:
+    case BGP_EXT_COM_OSPF_RID:
+    case BGP_EXT_COM_OSPF_RID2:
+        ND_PRINT("%s", GET_IPADDR_STRING(pptr+2));
+        break;

 
 

-       if (32 > plen)
-               return -1;
+    case BGP_EXT_COM_OSPF_RTYPE:
+    case BGP_EXT_COM_OSPF_RTYPE2:
+        ND_PRINT("area:%s, router-type:%s, metric-type:%s%s",
+                 GET_IPADDR_STRING(pptr+2),
+                 tok2str(bgp_extd_comm_ospf_rtype_values,
+                         "unknown (0x%02x)",
+                         GET_U_1((pptr + 6))),
+                 (GET_U_1(pptr + 7) &  BGP_OSPF_RTYPE_METRIC_TYPE) ? "E2" : "",
+                 ((GET_U_1(pptr + 6) == BGP_OSPF_RTYPE_EXT) || (GET_U_1(pptr + 6) == BGP_OSPF_RTYPE_NSSA)) ? "E1" : "");
+        break;

 
 

-        plen-=32; /* adjust prefix length */
+    case BGP_EXT_COM_L2INFO:
+        ND_PRINT("%s Control Flags [0x%02x]:MTU %u",
+                 tok2str(l2vpn_encaps_values,
+                         "unknown encaps",
+                         GET_U_1((pptr + 2))),
+                 GET_U_1((pptr + 3)),
+                 GET_BE_U_2(pptr + 4));
+        break;

 
 

-       if (64 < plen)
-               return -1;
+    case BGP_EXT_COM_SOURCE_AS:
+        ND_PRINT("AS %u", GET_BE_U_2(pptr + 2));
+        break;

 
 

-       memset(&route_target, 0, sizeof(route_target));
-       TCHECK2(pptr[1], (plen + 7) / 8);
-       memcpy(&route_target, &pptr[1], (plen + 7) / 8);
-       if (plen % 8) {
-               ((u_char *)&route_target)[(plen + 7) / 8 - 1] &=
-                       ((0xff00 >> (plen % 8)) & 0xff);
-       }
-       snprintf(buf, buflen, "origin AS: %u, route target %s",
-                 EXTRACT_32BITS(pptr+1),
-                 bgp_vpn_rd_print((u_char *)&route_target));
+    case BGP_EXT_COM_ENCAP:
+        ND_PRINT("Tunnel type: %s", tok2str(bgp_extd_comm_encap_tunnel_values,
+                                           "unknown encaps",
+                                           GET_BE_U_2(pptr + 6)));
+        break;

 
 

-       return 5 + (plen + 7) / 8;
+    default:
+        ND_PRINT("%02x%02x%02x%02x%02x%02x",
+                 GET_U_1(pptr + 2),
+                 GET_U_1(pptr + 3),
+                 GET_U_1(pptr + 4),
+                 GET_U_1(pptr + 5),
+                 GET_U_1(pptr + 6),
+                 GET_U_1(pptr + 7));
+        break;
+    }
+}

 
 

-trunc:
-       return -2;
+/*
+ * RFC4684 (Section 4)/RFC2858 (Section 4).
+ * RTC membership prefix is structured as follows
+ * [prefix-len] [origin-as] [route-target]
+ * The route-target is encoded as RT ext-comms.
+ * Prefix-len may be 0, 32..96
+ *
+ * Note that pptr is not packet data - it is
+ * a buffer owned by our caller - therefore GET_*
+ * macros can not be used.
+ */
+static char *
+bgp_rt_prefix_print(netdissect_options *ndo,
+                    const u_char *pptr,
+                    u_int plen)
+{
+    /* allocate space for the largest possible string */
+    char rtc_prefix_in_hex[sizeof("0000 0000 0000 0000")] = "";
+    u_int rtc_prefix_in_hex_len = 0;
+    static char output[61]; /* max response string */
+    /* allocate space for the largest possible string */
+    char astostr[AS_STR_SIZE];
+    uint16_t ec_type = 0;
+    u_int octet_count;
+    u_int i;
+
+    if (plen == 0) {
+        snprintf(output, sizeof(output), "route-target: 0:0/0");
+        return (output);
+    }
+
+    /* hex representation of the prefix */
+    octet_count = (plen+7)/8;
+    for (i=0; i<octet_count; i++) {
+        rtc_prefix_in_hex_len += snprintf(rtc_prefix_in_hex+rtc_prefix_in_hex_len,
+                                sizeof(rtc_prefix_in_hex)-rtc_prefix_in_hex_len,
+                                "%02x%s", *(pptr+i),
+                                ((i%2 == 1) && (i<octet_count-1)) ? " " : "");
+            }
+
+    if (plen < 16) {
+       /*
+        * The prefix is too short to include the full ext-comm type,
+        * so we have no way to parse it further.
+        */
+        snprintf(output, sizeof(output), "route-target: partial-type: (%s/%d)",
+                 rtc_prefix_in_hex, plen);
+        return (output);
+    }
+
+    /*
+     * get the ext-comm type
+     * Note: pptr references a static 8 octet buffer with unused bits set to 0,
+     * hense EXTRACT_*() macros are safe.
+     */
+    ec_type = EXTRACT_BE_U_2(pptr);
+    switch (ec_type) {
+    case BGP_EXT_COM_RT_0:
+        /* 2-byte-AS:number fmt */
+        snprintf(output, sizeof(output), "route-target: %u:%u/%d (%s)",
+                 EXTRACT_BE_U_2(pptr+2),
+                 EXTRACT_BE_U_4(pptr+4),
+                 plen, rtc_prefix_in_hex);
+        break;
+
+    case BGP_EXT_COM_RT_1:
+        /* IP-address:AS fmt */
+        snprintf(output, sizeof(output), "route-target: %u.%u.%u.%u:%u/%d (%s)",
+                 *(pptr+2), *(pptr+3), *(pptr+4), *(pptr+5),
+                 EXTRACT_BE_U_2(pptr+6), plen, rtc_prefix_in_hex);
+        break;
+
+    case BGP_EXT_COM_RT_2:
+        /* 4-byte-AS:number fmt */
+        snprintf(output, sizeof(output), "route-target: %s:%u/%d (%s)",
+                 as_printf(ndo, astostr, sizeof(astostr), EXTRACT_BE_U_4(pptr+2)),
+                 EXTRACT_BE_U_2(pptr+6), plen, rtc_prefix_in_hex);
+        break;
+
+    default:
+        snprintf(output, sizeof(output), "route target: unknown-type(%04x) (%s/%d)",
+                 ec_type,
+                 rtc_prefix_in_hex, plen);
+        break;
+    }
+    return (output);

 }
 
 }
 

+/* RFC 4684 */

 static int
 static int

-decode_labeled_vpn_prefix4(const u_char *pptr, char *buf, u_int buflen)
+decode_rt_routing_info(netdissect_options *ndo,
+                       const u_char *pptr)

 {
 {

-       struct in_addr addr;
-       u_int plen;
+    uint8_t route_target[8];
+    u_int plen;
+    /* allocate space for the largest possible string */
+    char astostr[AS_STR_SIZE];
+    u_int num_octets;
+
+    /* NLRI "prefix length" from RFC 2858 Section 4. */
+    plen = GET_U_1(pptr);   /* get prefix length */
+
+    /* NLRI "prefix" (ibid), valid lengths are { 0, 32, 33, ..., 96 } bits.
+     * RFC 4684 Section 4 defines the layout of "origin AS" and "route
+     * target" fields inside the "prefix" depending on its length.
+     */
+    if (0 == plen) {
+        /* Without "origin AS", without "route target". */
+        ND_PRINT("\n\t      default route target");
+        return 1;
+    }

 
 

-       TCHECK(pptr[0]);
-       plen = pptr[0];   /* get prefix length */
+    if (32 > plen) {
+        ND_PRINT("\n\t      (illegal prefix length)");
+        return -1;
+    }

 
 

-       if ((24+64) > plen)
-               return -1;
+    /* With at least "origin AS", possibly with "route target". */
+    as_printf(ndo, astostr, sizeof(astostr), GET_BE_U_4(pptr + 1));

 
 

-        plen-=(24+64); /* adjust prefixlen - labellength - RD len*/
+    plen -= 32; /* adjust prefix length */

 
 

-       if (32 < plen)
-               return -1;
+    if (64 < plen) {
+        ND_PRINT("\n\t      (illegal prefix length)");
+        return -1;
+    }

 
 

-       memset(&addr, 0, sizeof(addr));
-       TCHECK2(pptr[12], (plen + 7) / 8);
-       memcpy(&addr, &pptr[12], (plen + 7) / 8);
-       if (plen % 8) {
-               ((u_char *)&addr)[(plen + 7) / 8 - 1] &=
-                       ((0xff00 >> (plen % 8)) & 0xff);
-       }
-        /* the label may get offsetted by 4 bits so lets shift it right */
-       snprintf(buf, buflen, "RD: %s, %s/%d, label:%u %s",
-                 bgp_vpn_rd_print(pptr+4),
-                 getname((u_char *)&addr),
-                 plen,
-                 EXTRACT_24BITS(pptr+1)>>4,
-                 ((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
+    /* From now on (plen + 7) / 8 evaluates to { 0, 1, 2, ..., 8 }
+     * and gives the number of octets in the variable-length "route
+     * target" field inside this NLRI "prefix". Look for it.
+     */
+    memset(&route_target, 0, sizeof(route_target));
+    num_octets = (plen + 7) / 8;
+    GET_CPY_BYTES(&route_target, pptr + 5, num_octets);
+    /* If mask-len is not on octet boundary, ensure all extra bits are 0 */
+    if (plen % 8) {
+        ((u_char *)&route_target)[num_octets - 1] &=
+            ((0xff00 >> (plen % 8)) & 0xff);
+    }
+    ND_PRINT("\n\t      origin AS: %s, %s",
+             astostr,
+             bgp_rt_prefix_print(ndo, (u_char *)&route_target, plen));

 
 

-       return 12 + (plen + 7) / 8;
+    return 5 + num_octets;
+}

 
 

-trunc:
-       return -2;
+static int
+decode_labeled_vpn_prefix4(netdissect_options *ndo,
+                           const u_char *pptr, char *buf, size_t buflen)
+{
+    nd_ipv4 addr;
+    u_int plen;
+
+    plen = GET_U_1(pptr);   /* get prefix length */
+
+    if ((24+64) > plen)
+        return -1;
+
+    plen -= (24+64); /* adjust prefixlen - labellength - RD len*/
+
+    if (32 < plen)
+        return -1;
+
+    memset(&addr, 0, sizeof(addr));
+    GET_CPY_BYTES(&addr, pptr + 12, (plen + 7) / 8);
+    if (plen % 8) {
+        ((u_char *)&addr)[(plen + 7) / 8 - 1] &=
+            ((0xff00 >> (plen % 8)) & 0xff);
+    }
+    /* the label may get offsetted by 4 bits so lets shift it right */
+    snprintf(buf, buflen, "RD: %s, %s/%u, label:%u %s",
+                bgp_vpn_rd_print(ndo, pptr+4),
+                ipaddr_string(ndo, (const u_char *)&addr),
+                plen,
+                GET_BE_U_3(pptr + 1)>>4,
+                ((GET_U_1(pptr + 3) & 1) == 0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
+
+    return 12 + (plen + 7) / 8;
+}
+
+/*
+ * +-------------------------------+
+ * |                               |
+ * |  RD:IPv4-address (12 octets)  |
+ * |                               |
+ * +-------------------------------+
+ * |  MDT Group-address (4 octets) |
+ * +-------------------------------+
+ */
+
+#define MDT_VPN_NLRI_LEN 16
+
+static int
+decode_mdt_vpn_nlri(netdissect_options *ndo,
+                    const u_char *pptr, char *buf, size_t buflen)
+{
+    const u_char *rd;
+    const u_char *vpn_ip;
+
+    /* if the NLRI is not predefined length, quit.*/
+    if (GET_U_1(pptr) != MDT_VPN_NLRI_LEN * 8)
+        return -1;
+    pptr++;
+
+    /* RD */
+    ND_TCHECK_8(pptr);
+    rd = pptr;
+    pptr += 8;
+
+    /* IPv4 address */
+    vpn_ip = pptr;
+    pptr += sizeof(nd_ipv4);
+
+    /* MDT Group Address */
+    snprintf(buf, buflen, "RD: %s, VPN IP Address: %s, MC Group Address: %s",
+                bgp_vpn_rd_print(ndo, rd), GET_IPADDR_STRING(vpn_ip), GET_IPADDR_STRING(pptr));
+
+    return MDT_VPN_NLRI_LEN + 1;
+
+ trunc:
+    return -2;

 }
 
 #define BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_I_PMSI   1
 }
 
 #define BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_I_PMSI   1


@@ -653,7 +1140,7 @@ trunc:
 #define BGP_MULTICAST_VPN_ROUTE_TYPE_SHARED_TREE_JOIN  6
 #define BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_TREE_JOIN  7
 
 #define BGP_MULTICAST_VPN_ROUTE_TYPE_SHARED_TREE_JOIN  6
 #define BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_TREE_JOIN  7
 

-static struct tok bgp_multicast_vpn_route_type_values[] = {
+static const struct tok bgp_multicast_vpn_route_type_values[] = {

     { BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_I_PMSI, "Intra-AS I-PMSI"},
     { BGP_MULTICAST_VPN_ROUTE_TYPE_INTER_AS_I_PMSI, "Inter-AS I-PMSI"},
     { BGP_MULTICAST_VPN_ROUTE_TYPE_S_PMSI, "S-PMSI"},
     { BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_I_PMSI, "Intra-AS I-PMSI"},
     { BGP_MULTICAST_VPN_ROUTE_TYPE_INTER_AS_I_PMSI, "Inter-AS I-PMSI"},
     { BGP_MULTICAST_VPN_ROUTE_TYPE_S_PMSI, "S-PMSI"},


@@ -661,1524 +1148,2047 @@ static struct tok bgp_multicast_vpn_route_type_values[] = {
     { BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_ACTIVE, "Source-Active"},
     { BGP_MULTICAST_VPN_ROUTE_TYPE_SHARED_TREE_JOIN, "Shared Tree Join"},
     { BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_TREE_JOIN, "Source Tree Join"},
     { BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_ACTIVE, "Source-Active"},
     { BGP_MULTICAST_VPN_ROUTE_TYPE_SHARED_TREE_JOIN, "Shared Tree Join"},
     { BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_TREE_JOIN, "Source Tree Join"},

+    { 0, NULL}

 };
 
 static int
 };
 
 static int

-decode_multicast_vpn(const u_char *pptr, char *buf, u_int buflen)
+decode_multicast_vpn(netdissect_options *ndo,
+                     const u_char *pptr, char *buf, size_t buflen)

 {
 {

-        u_int8_t route_type, route_length;
+    /* allocate space for the largest possible string */
+    char astostr[AS_STR_SIZE];
+    uint8_t route_type, route_length;
+    u_int addr_length, sg_length;
+    u_int offset;
+
+    route_type = GET_U_1(pptr);
+    pptr++;
+    route_length = GET_U_1(pptr);
+    pptr++;
+
+    snprintf(buf, buflen, "Route-Type: %s (%u), length: %u",
+         tok2str(bgp_multicast_vpn_route_type_values,
+                 "Unknown", route_type),
+         route_type, route_length);
+
+    switch(route_type) {
+    case BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_I_PMSI:
+        ND_TCHECK_LEN(pptr, BGP_VPN_RD_LEN);
+        offset = (u_int)strlen(buf);
+        snprintf(buf + offset, buflen - offset, ", RD: %s, Originator %s",
+                    bgp_vpn_rd_print(ndo, pptr),
+                    bgp_vpn_ip_print(ndo, pptr + BGP_VPN_RD_LEN,
+                                     (route_length - BGP_VPN_RD_LEN) << 3));
+        break;
+    case BGP_MULTICAST_VPN_ROUTE_TYPE_INTER_AS_I_PMSI:
+        ND_TCHECK_LEN(pptr, BGP_VPN_RD_LEN + 4);
+        offset = (u_int)strlen(buf);
+        snprintf(buf + offset, buflen - offset, ", RD: %s, Source-AS %s",
+        bgp_vpn_rd_print(ndo, pptr),
+        as_printf(ndo, astostr, sizeof(astostr),
+        GET_BE_U_4(pptr + BGP_VPN_RD_LEN)));
+        break;

 
 

-       TCHECK2(pptr[0], 2);
-        route_type = *pptr++;
-        route_length = *pptr++;
+    case BGP_MULTICAST_VPN_ROUTE_TYPE_S_PMSI:
+        ND_TCHECK_LEN(pptr, BGP_VPN_RD_LEN);
+        offset = (u_int)strlen(buf);
+        snprintf(buf + offset, buflen - offset, ", RD: %s",
+                    bgp_vpn_rd_print(ndo, pptr));
+        pptr += BGP_VPN_RD_LEN;

 
 

-        snprintf(buf, buflen, "Route-Type: %s (%u), length: %u",
-                 tok2str(bgp_multicast_vpn_route_type_values, "Unknown", route_type),
-                 route_type, route_length);
+        sg_length = bgp_vpn_sg_print(ndo, pptr, buf, buflen);
+        addr_length =  route_length - sg_length;

 
 

-        switch(route_type) {
+        ND_TCHECK_LEN(pptr, addr_length);
+        offset = (u_int)strlen(buf);
+        snprintf(buf + offset, buflen - offset, ", Originator %s",
+                    bgp_vpn_ip_print(ndo, pptr, addr_length << 3));
+        break;

 
 

-            /*
-             * no per route-type printing yet.
-             */
-        case BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_I_PMSI:
-        case BGP_MULTICAST_VPN_ROUTE_TYPE_INTER_AS_I_PMSI:
-        case BGP_MULTICAST_VPN_ROUTE_TYPE_S_PMSI:
-        case BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_SEG_LEAF:
-        case BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_ACTIVE:
-        case BGP_MULTICAST_VPN_ROUTE_TYPE_SHARED_TREE_JOIN:
-        case BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_TREE_JOIN:
-        default:
-            break;
-        }
+    case BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_ACTIVE:
+        ND_TCHECK_LEN(pptr, BGP_VPN_RD_LEN);
+        offset = (u_int)strlen(buf);
+        snprintf(buf + offset, buflen - offset, ", RD: %s",
+                    bgp_vpn_rd_print(ndo, pptr));
+        pptr += BGP_VPN_RD_LEN;
+
+        bgp_vpn_sg_print(ndo, pptr, buf, buflen);
+        break;
+
+    case BGP_MULTICAST_VPN_ROUTE_TYPE_SHARED_TREE_JOIN: /* fall through */
+    case BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_TREE_JOIN:
+        ND_TCHECK_LEN(pptr, BGP_VPN_RD_LEN + 4);
+        offset = (u_int)strlen(buf);
+        snprintf(buf + offset, buflen - offset, ", RD: %s, Source-AS %s",
+                    bgp_vpn_rd_print(ndo, pptr),
+                    as_printf(ndo, astostr, sizeof(astostr),
+                    GET_BE_U_4(pptr + BGP_VPN_RD_LEN)));
+        pptr += BGP_VPN_RD_LEN + 4;
+
+        bgp_vpn_sg_print(ndo, pptr, buf, buflen);
+        break;
+
+        /*
+         * no per route-type printing yet.
+         */
+    case BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_SEG_LEAF:
+    default:
+        break;
+    }

 
 

-        return route_length + 2;
+    return route_length + 2;

 
 trunc:
 
 trunc:

-       return -2;
+    return -2;

 }
 
 }
 

+/*
+ * As I remember, some versions of systems have an snprintf() that
+ * returns -1 if the buffer would have overflowed.  If the return
+ * value is negative, set buflen to 0, to indicate that we've filled
+ * the buffer up.
+ *
+ * If the return value is greater than buflen, that means that
+ * the buffer would have overflowed; again, set buflen to 0 in
+ * that case.
+ */
+#define UPDATE_BUF_BUFLEN(buf, buflen, stringlen) \
+    if (stringlen<0) \
+        buflen=0; \
+    else if ((u_int)stringlen>buflen) \
+        buflen=0; \
+    else { \
+        buflen-=stringlen; \
+        buf+=stringlen; \
+    }
+

 static int
 static int

-decode_labeled_vpn_l2(const u_char *pptr, char *buf, u_int buflen)
+decode_labeled_vpn_l2(netdissect_options *ndo,
+                      const u_char *pptr, char *buf, size_t buflen)

 {
 {

-        int plen,tlen,strlen,tlv_type,tlv_len,ttlv_len;
-
-       TCHECK2(pptr[0], 2);
-        plen=EXTRACT_16BITS(pptr);
-        tlen=plen;
-        pptr+=2;
-       TCHECK2(pptr[0],15);
-        strlen=snprintf(buf, buflen, "RD: %s, CE-ID: %u, Label-Block Offset: %u, Label Base %u",
-                        bgp_vpn_rd_print(pptr),
-                        EXTRACT_16BITS(pptr+8),
-                        EXTRACT_16BITS(pptr+10),
-                        EXTRACT_24BITS(pptr+12)>>4); /* the label is offsetted by 4 bits so lets shift it right */
-        pptr+=15;
-        tlen-=15;
+    u_int plen, tlen, tlv_type, tlv_len, ttlv_len;
+    int stringlen;
+
+    plen = GET_BE_U_2(pptr);
+    tlen = plen;
+    pptr += 2;
+    /* Old and new L2VPN NLRI share AFI/SAFI
+     *   -> Assume a 12 Byte-length NLRI is auto-discovery-only
+     *      and > 17 as old format. Complain for the middle case
+     */
+    if (plen == 12) {
+        /* assume AD-only with RD, BGPNH */
+        ND_TCHECK_LEN(pptr, 12);
+        buf[0] = '\0';
+        stringlen = snprintf(buf, buflen, "RD: %s, BGPNH: %s",
+                                bgp_vpn_rd_print(ndo, pptr),
+                                GET_IPADDR_STRING(pptr+8));
+        UPDATE_BUF_BUFLEN(buf, buflen, stringlen);
+        pptr += 12;
+        tlen -= 12;
+        return plen + 2;
+    } else if (plen > 17) {
+        /* assume old format */
+        /* RD, ID, LBLKOFF, LBLBASE */
+
+        ND_TCHECK_LEN(pptr, 15);
+        buf[0] = '\0';
+        stringlen = snprintf(buf, buflen, "RD: %s, CE-ID: %u, Label-Block Offset: %u, Label Base %u",
+                                bgp_vpn_rd_print(ndo, pptr),
+                                GET_BE_U_2(pptr + 8),
+                                GET_BE_U_2(pptr + 10),
+                                GET_BE_U_3(pptr + 12)>>4); /* the label is offsetted by 4 bits so lets shift it right */
+        UPDATE_BUF_BUFLEN(buf, buflen, stringlen);
+        pptr += 15;
+        tlen -= 15;

 
         /* ok now the variable part - lets read out TLVs*/
 
         /* ok now the variable part - lets read out TLVs*/

-        while (tlen>0) {
-            if (tlen < 3)
-                return -1;
-            TCHECK2(pptr[0], 3);
-            tlv_type=*pptr++;
-            tlv_len=EXTRACT_16BITS(pptr);
-            ttlv_len=tlv_len;
-            pptr+=2;
+        while (tlen != 0) {
+            if (tlen < 3) {
+                if (buflen != 0) {
+                    stringlen=snprintf(buf,buflen, "\n\t\tran past the end");
+                    UPDATE_BUF_BUFLEN(buf, buflen, stringlen);
+                }
+                return plen + 2;
+            }
+            tlv_type = GET_U_1(pptr);
+            pptr++;
+            tlv_len = GET_BE_U_2(pptr);  /* length, in *bits* */
+            ttlv_len = (tlv_len + 7)/8;      /* length, in *bytes* */
+            pptr += 2;

 
             switch(tlv_type) {
             case 1:
 
             switch(tlv_type) {
             case 1:

-                strlen+=snprintf(buf+strlen,buflen-strlen, "\n\t\tcircuit status vector (%u) length: %u: 0x",
-                                 tlv_type,
-                                 tlv_len);
-                ttlv_len=ttlv_len/8+1; /* how many bytes do we need to read ? */
-                while (ttlv_len>0) {
-                    TCHECK(pptr[0]);
-                    strlen+=snprintf(buf+strlen,buflen-strlen, "%02x",*pptr++);
+                if (buflen != 0) {
+                    stringlen=snprintf(buf,buflen, "\n\t\tcircuit status vector (%u) length: %u: 0x",
+                                          tlv_type,
+                                          tlv_len);
+                    UPDATE_BUF_BUFLEN(buf, buflen, stringlen);
+                }
+                while (ttlv_len != 0) {
+                    if (tlen < 1) {
+                        if (buflen != 0) {
+                            stringlen=snprintf(buf,buflen, " (ran past the end)");
+                            UPDATE_BUF_BUFLEN(buf, buflen, stringlen);
+                        }
+                        return plen + 2;
+                    }
+                    ND_TCHECK_1(pptr);
+                    if (buflen != 0) {
+                        stringlen=snprintf(buf,buflen, "%02x",
+                                              GET_U_1(pptr));
+                        pptr++;
+                        UPDATE_BUF_BUFLEN(buf, buflen, stringlen);
+                    }

                     ttlv_len--;
                     ttlv_len--;

+                    tlen--;

                 }
                 break;
             default:
                 }
                 break;
             default:

-                snprintf(buf+strlen,buflen-strlen, "\n\t\tunknown TLV #%u, length: %u",
-                         tlv_type,
-                         tlv_len);
+                if (buflen != 0) {
+                    stringlen=snprintf(buf,buflen, "\n\t\tunknown TLV #%u, length: %u",
+                                          tlv_type,
+                                          tlv_len);
+                    UPDATE_BUF_BUFLEN(buf, buflen, stringlen);
+                }
+                if (tlen < ttlv_len) {
+                    if (buflen != 0) {
+                        stringlen=snprintf(buf,buflen, " (ran past the end)");
+                        UPDATE_BUF_BUFLEN(buf, buflen, stringlen);
+                    }
+                    return plen + 2;
+                }
+                tlen -= ttlv_len;

                 break;
             }
                 break;
             }

-            tlen-=(tlv_len<<3); /* the tlv-length is expressed in bits so lets shift it tright */

         }
         }

-        return plen+2;
+        return plen + 2;
+    } else {
+        /* complain bitterly ? */
+        /* fall through */
+        goto trunc;
+    }

 
 trunc:
 
 trunc:

-        return -2;
+    return -2;

 }
 
 }
 

-#ifdef INET6

 int
 int

-decode_prefix6(const u_char *pd, char *buf, u_int buflen)
+decode_prefix6(netdissect_options *ndo,
+               const u_char *pd, u_int itemlen, char *buf, size_t buflen)

 {
 {

-       struct in6_addr addr;
-       u_int plen;
-
-       TCHECK(pd[0]);
-       plen = pd[0];
-       if (128 < plen)
-               return -1;
-
-       memset(&addr, 0, sizeof(addr));
-       TCHECK2(pd[1], (plen + 7) / 8);
-       memcpy(&addr, &pd[1], (plen + 7) / 8);
-       if (plen % 8) {
-               addr.s6_addr[(plen + 7) / 8 - 1] &=
-                       ((0xff00 >> (plen % 8)) & 0xff);
-       }
-       snprintf(buf, buflen, "%s/%d", getname6((u_char *)&addr), plen);
-       return 1 + (plen + 7) / 8;
+    nd_ipv6 addr;
+    u_int plen, plenbytes;
+
+    ITEMCHECK(1);
+    plen = GET_U_1(pd);
+    if (128 < plen)
+        return -1;
+    itemlen -= 1;
+
+    memset(&addr, 0, sizeof(addr));
+    plenbytes = (plen + 7) / 8;
+    ITEMCHECK(plenbytes);
+    GET_CPY_BYTES(&addr, pd + 1, plenbytes);
+    if (plen % 8) {
+        addr[plenbytes - 1] &=
+            ((0xff00 >> (plen % 8)) & 0xff);
+    }
+    snprintf(buf, buflen, "%s/%u", ip6addr_string(ndo, (const u_char *)&addr), plen);
+    return 1 + plenbytes;

 
 

-trunc:
-       return -2;
+badtlv:
+    return -2;

 }
 
 static int
 }
 
 static int

-decode_labeled_prefix6(const u_char *pptr, char *buf, u_int buflen)
+decode_labeled_prefix6(netdissect_options *ndo,
+               const u_char *pptr, u_int itemlen, char *buf, size_t buflen)

 {
 {

-       struct in6_addr addr;
-       u_int plen;
+    nd_ipv6 addr;
+    u_int plen, plenbytes;

 
 

-       TCHECK(pptr[0]);
-       plen = pptr[0]; /* get prefix length */
+    /* prefix length and label = 4 bytes */
+    ND_TCHECK_4(pptr);
+    ITEMCHECK(4);
+    plen = GET_U_1(pptr); /* get prefix length */

 
 

-       if (24 > plen)
-               return -1;
+    if (24 > plen)
+        return -1;

 
 

-        plen-=24; /* adjust prefixlen - labellength */
+    plen -= 24; /* adjust prefixlen - labellength */

 
 

-       if (128 < plen)
-               return -1;
+    if (128 < plen)
+        return -1;
+    itemlen -= 4;

 
 

-       memset(&addr, 0, sizeof(addr));
-       TCHECK2(pptr[4], (plen + 7) / 8);
-       memcpy(&addr, &pptr[4], (plen + 7) / 8);
-       if (plen % 8) {
-               addr.s6_addr[(plen + 7) / 8 - 1] &=
-                       ((0xff00 >> (plen % 8)) & 0xff);
-       }
-        /* the label may get offsetted by 4 bits so lets shift it right */
-       snprintf(buf, buflen, "%s/%d, label:%u %s",
-                 getname6((u_char *)&addr),
-                 plen,
-                 EXTRACT_24BITS(pptr+1)>>4,
-                 ((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
+    memset(&addr, 0, sizeof(addr));
+    plenbytes = (plen + 7) / 8;
+    GET_CPY_BYTES(&addr, pptr + 4, plenbytes);
+    if (plen % 8) {
+        addr[plenbytes - 1] &=
+            ((0xff00 >> (plen % 8)) & 0xff);
+    }
+    /* the label may get offsetted by 4 bits so lets shift it right */
+    snprintf(buf, buflen, "%s/%u, label:%u %s",
+                ip6addr_string(ndo, (const u_char *)&addr),
+                plen,
+                GET_BE_U_3(pptr + 1)>>4,
+                ((GET_U_1(pptr + 3) & 1) == 0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );

 
 

-       return 4 + (plen + 7) / 8;
+    return 4 + plenbytes;

 
 trunc:
 
 trunc:

-       return -2;
+    return -2;
+
+badtlv:
+    return -3;

 }
 
 static int
 }
 
 static int

-decode_labeled_vpn_prefix6(const u_char *pptr, char *buf, u_int buflen)
+decode_labeled_vpn_prefix6(netdissect_options *ndo,
+                           const u_char *pptr, char *buf, size_t buflen)

 {
 {

-       struct in6_addr addr;
-       u_int plen;
+    nd_ipv6 addr;
+    u_int plen;

 
 

-       TCHECK(pptr[0]);
-       plen = pptr[0];   /* get prefix length */
+    plen = GET_U_1(pptr);   /* get prefix length */

 
 

-       if ((24+64) > plen)
-               return -1;
+    if ((24+64) > plen)
+        return -1;

 
 

-        plen-=(24+64); /* adjust prefixlen - labellength - RD len*/
+    plen -= (24+64); /* adjust prefixlen - labellength - RD len*/

 
 

-       if (128 < plen)
-               return -1;
+    if (128 < plen)
+        return -1;

 
 

-       memset(&addr, 0, sizeof(addr));
-       TCHECK2(pptr[12], (plen + 7) / 8);
-       memcpy(&addr, &pptr[12], (plen + 7) / 8);
-       if (plen % 8) {
-               addr.s6_addr[(plen + 7) / 8 - 1] &=
-                       ((0xff00 >> (plen % 8)) & 0xff);
-       }
-        /* the label may get offsetted by 4 bits so lets shift it right */
-       snprintf(buf, buflen, "RD: %s, %s/%d, label:%u %s",
-                 bgp_vpn_rd_print(pptr+4),
-                 getname6((u_char *)&addr),
-                 plen,
-                 EXTRACT_24BITS(pptr+1)>>4,
-                 ((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
+    memset(&addr, 0, sizeof(addr));
+    GET_CPY_BYTES(&addr, pptr + 12, (plen + 7) / 8);
+    if (plen % 8) {
+        addr[(plen + 7) / 8 - 1] &=
+            ((0xff00 >> (plen % 8)) & 0xff);
+    }
+    /* the label may get offsetted by 4 bits so lets shift it right */
+    snprintf(buf, buflen, "RD: %s, %s/%u, label:%u %s",
+                bgp_vpn_rd_print(ndo, pptr+4),
+                ip6addr_string(ndo, (const u_char *)&addr),
+                plen,
+                GET_BE_U_3(pptr + 1)>>4,
+                ((GET_U_1(pptr + 3) & 1) == 0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
+
+    return 12 + (plen + 7) / 8;
+}

 
 

-       return 12 + (plen + 7) / 8;
+static int
+decode_clnp_prefix(netdissect_options *ndo,
+                   const u_char *pptr, char *buf, size_t buflen)
+{
+    uint8_t addr[19];
+    u_int plen;

 
 

-trunc:
-       return -2;
+    plen = GET_U_1(pptr); /* get prefix length */
+
+    if (152 < plen)
+        return -1;
+
+    memset(&addr, 0, sizeof(addr));
+    GET_CPY_BYTES(&addr, pptr + 4, (plen + 7) / 8);
+    if (plen % 8) {
+        addr[(plen + 7) / 8 - 1] &=
+            ((0xff00 >> (plen % 8)) & 0xff);
+    }
+    /* Cannot use GET_ISONSAP_STRING (not packet buffer pointer) */
+    snprintf(buf, buflen, "%s/%u",
+                isonsap_string(ndo, addr,(plen + 7) / 8),
+                plen);
+
+    return 1 + (plen + 7) / 8;

 }
 }

-#endif

 
 static int
 
 static int

-decode_clnp_prefix(const u_char *pptr, char *buf, u_int buflen)
+decode_labeled_vpn_clnp_prefix(netdissect_options *ndo,
+                               const u_char *pptr, char *buf, size_t buflen)

 {
 {

-        u_int8_t addr[19];
-       u_int plen;
+    uint8_t addr[19];
+    u_int plen;

 
 

-       TCHECK(pptr[0]);
-       plen = pptr[0]; /* get prefix length */
+    plen = GET_U_1(pptr);   /* get prefix length */

 
 

-       if (152 < plen)
-               return -1;
+    if ((24+64) > plen)
+        return -1;

 
 

-       memset(&addr, 0, sizeof(addr));
-       TCHECK2(pptr[4], (plen + 7) / 8);
-       memcpy(&addr, &pptr[4], (plen + 7) / 8);
-       if (plen % 8) {
-               addr[(plen + 7) / 8 - 1] &=
-                       ((0xff00 >> (plen % 8)) & 0xff);
-       }
-       snprintf(buf, buflen, "%s/%d",
-                 isonsap_string(addr,(plen + 7) / 8),
-                 plen);
+    plen -= (24+64); /* adjust prefixlen - labellength - RD len*/

 
 

-       return 1 + (plen + 7) / 8;
+    if (152 < plen)
+        return -1;

 
 

-trunc:
-       return -2;
+    memset(&addr, 0, sizeof(addr));
+    GET_CPY_BYTES(&addr, pptr + 12, (plen + 7) / 8);
+    if (plen % 8) {
+        addr[(plen + 7) / 8 - 1] &= ((0xff00 >> (plen % 8)) & 0xff);
+    }
+    /* the label may get offsetted by 4 bits so lets shift it right */
+    /* Cannot use GET_ISONSAP_STRING (not packet buffer pointer) */
+    snprintf(buf, buflen, "RD: %s, %s/%u, label:%u %s",
+                bgp_vpn_rd_print(ndo, pptr+4),
+                isonsap_string(ndo, addr,(plen + 7) / 8),
+                plen,
+                GET_BE_U_3(pptr + 1)>>4,
+                ((GET_U_1(pptr + 3) & 1) == 0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
+
+    return 12 + (plen + 7) / 8;

 }
 
 }
 

-static int
-decode_labeled_vpn_clnp_prefix(const u_char *pptr, char *buf, u_int buflen)
+/*
+ * bgp_attr_get_as_size
+ *
+ * Try to find the size of the ASs encoded in an as-path. It is not obvious, as
+ * both Old speakers that do not support 4 byte AS, and the new speakers that do
+ * support, exchange AS-Path with the same path-attribute type value 0x02.
+ */
+static u_int
+bgp_attr_get_as_size(netdissect_options *ndo,
+                     uint8_t bgpa_type, const u_char *pptr, u_int len)

 {
 {

-        u_int8_t addr[19];
-       u_int plen;
+    const u_char *tptr = pptr;
+
+    /*
+     * If the path attribute is the optional AS4 path type, then we already
+     * know, that ASs must be encoded in 4 byte format.
+     */
+    if (bgpa_type == BGPTYPE_AS4_PATH) {
+        return 4;
+    }
+
+    /*
+     * Let us assume that ASs are of 2 bytes in size, and check if the AS-Path
+     * TLV is good. If not, ask the caller to try with AS encoded as 4 bytes
+     * each.
+     */
+    while (tptr < pptr + len) {
+        /*
+         * If we do not find a valid segment type, our guess might be wrong.
+         */
+        if (GET_U_1(tptr) < BGP_AS_SEG_TYPE_MIN || GET_U_1(tptr) > BGP_AS_SEG_TYPE_MAX) {
+            goto trunc;
+        }
+        tptr += 2 + GET_U_1(tptr + 1) * 2;
+    }
+
+    /*
+     * If we correctly reached end of the AS path attribute data content,
+     * then most likely ASs were indeed encoded as 2 bytes.
+     */
+    if (tptr == pptr + len) {
+        return 2;
+    }

 
 

-       TCHECK(pptr[0]);
-       plen = pptr[0];   /* get prefix length */
+trunc:

 
 

-       if ((24+64) > plen)
-               return -1;
+    /*
+     * We can come here, either we did not have enough data, or if we
+     * try to decode 4 byte ASs in 2 byte format. Either way, return 4,
+     * so that calller can try to decode each AS as of 4 bytes. If indeed
+     * there was not enough data, it will crib and end the parse anyways.
+     */
+    return 4;
+}

 
 

-        plen-=(24+64); /* adjust prefixlen - labellength - RD len*/
+/*
+ * The only way to know that a BGP UPDATE message is using add path is
+ * by checking if the capability is in the OPEN message which we may have missed.
+ * So this function checks if it is possible that the update could contain add path
+ * and if so it checks that standard BGP doesn't make sense.
+ */
+static int
+check_add_path(netdissect_options *ndo, const u_char *pptr, u_int length,
+               u_int max_prefix_length)
+{
+    u_int offset, prefix_length;

 
 

-       if (152 < plen)
-               return -1;
+    if (length < 5) {
+        return 0;
+    }

 
 

-       memset(&addr, 0, sizeof(addr));
-       TCHECK2(pptr[12], (plen + 7) / 8);
-       memcpy(&addr, &pptr[12], (plen + 7) / 8);
-       if (plen % 8) {
-               addr[(plen + 7) / 8 - 1] &=
-                       ((0xff00 >> (plen % 8)) & 0xff);
-       }
-        /* the label may get offsetted by 4 bits so lets shift it right */
-       snprintf(buf, buflen, "RD: %s, %s/%d, label:%u %s",
-                 bgp_vpn_rd_print(pptr+4),
-                 isonsap_string(addr,(plen + 7) / 8),
-                 plen,
-                 EXTRACT_24BITS(pptr+1)>>4,
-                 ((pptr[3]&1)==0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
+    /*
+     * Scan through the NLRI information under the assumpetion that
+     * it doesn't have path IDs.
+     */
+    for (offset = 0; offset < length;) {
+        offset += 4;
+        if (!ND_TTEST_1(pptr + offset)) {
+            /* We ran out of captured data; quit scanning. */
+            break;
+        }
+        prefix_length = GET_U_1(pptr + offset);
+        /*
+         * Add 4 to cover the path id
+         * and check the prefix length isn't greater than 32/128.
+         */
+        if (prefix_length > max_prefix_length) {
+            return 0;
+        }
+        /* Add 1 for the prefix_length byte and prefix_length to cover the address */
+        offset += 1 + ((prefix_length + 7) / 8);
+    }
+    /* check we haven't gone past the end of the section */
+    if (offset > length) {
+        return 0;
+    }
+
+    /* check it's not standard BGP */
+    for (offset = 0; offset < length; ) {
+        if (!ND_TTEST_1(pptr + offset)) {
+            /* We ran out of captured data; quit scanning. */
+            break;
+        }
+        prefix_length = GET_U_1(pptr + offset);
+        /*
+         * If the prefix_length is zero (0.0.0.0/0)
+         * and since it's not the only address (length >= 5)
+         * then it is add-path
+         */
+        if (prefix_length < 1 || prefix_length > max_prefix_length) {
+            return 1;
+        }
+        offset += 1 + ((prefix_length + 7) / 8);
+    }
+    if (offset > length) {
+        return 1;
+    }

 
 

-       return 12 + (plen + 7) / 8;
+    /* assume not add-path by default */
+    return 0;
+}

 
 

+static int
+bgp_mp_af_print(netdissect_options *ndo,
+               const u_char *tptr, u_int tlen,
+               uint16_t *afp, uint8_t *safip)
+{
+       uint16_t af;
+       uint8_t safi;
+
+        af = GET_BE_U_2(tptr);
+       *afp = af;
+        safi = GET_U_1(tptr + 2);
+       *safip = safi;
+
+        ND_PRINT("\n\t    AFI: %s (%u), %sSAFI: %s (%u)",
+                  tok2str(af_values, "Unknown AFI", af),
+                  af,
+                  (safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */
+                  tok2str(bgp_safi_values, "Unknown SAFI", safi),
+                  safi);
+
+        switch(af<<8 | safi) {
+        case (AFNUM_INET<<8 | SAFNUM_UNICAST):
+        case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
+        case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
+        case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
+        case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
+        case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
+        case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
+        case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
+        case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN):
+        case (AFNUM_INET<<8 | SAFNUM_MDT):
+        case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
+        case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
+        case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
+        case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
+        case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
+        case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
+        case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
+        case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
+        case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
+        case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
+        case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
+        case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
+        case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
+        case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
+        case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
+        case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
+        case (AFNUM_VPLS<<8 | SAFNUM_VPLS):
+            break;
+        default:
+            ND_TCHECK_LEN(tptr, tlen);
+            ND_PRINT("\n\t    no AFI %u / SAFI %u decoder", af, safi);
+            if (ndo->ndo_vflag <= 1)
+                print_unknown_data(ndo, tptr, "\n\t    ", tlen);
+            return -1;
+        }
+       return 0;

 trunc:
        return -2;
 }
 
 static int
 trunc:
        return -2;
 }
 
 static int

-bgp_attr_print(const struct bgp_attr *attr, const u_char *pptr, int len)
+bgp_nlri_print(netdissect_options *ndo, uint16_t af, uint8_t safi,
+              const u_char *tptr, u_int len,
+              char *buf, size_t buflen,
+              int add_path4, int add_path6)

 {
 {

-       int i;
-       u_int16_t af;
-       u_int8_t safi, snpa, nhlen;
-        union { /* copy buffer for bandwidth values */
-            float f; 
-            u_int32_t i;
-        } bw;

        int advance;
        int advance;

-       int tlen;
-       const u_char *tptr;
-       char buf[MAXHOSTNAMELEN + 100];
-       char tokbuf[TOKBUFSIZE];
-
-        tptr = pptr;
-        tlen=len;
-
-       switch (attr->bgpa_type) {
-       case BGPTYPE_ORIGIN:
-               if (len != 1)
-                       printf("invalid len");
-               else {
-                       TCHECK(*tptr);
-                       printf("%s", tok2strbuf(bgp_origin_values,
-                                               "Unknown Origin Typecode",
-                                               tptr[0],
-                                               tokbuf, sizeof(tokbuf)));
-               }
-               break;
-
-       case BGPTYPE_AS_PATH:
-               if (len % 2) {
-                       printf("invalid len");
-                       break;
-               }
-                if (!len) {
-                       printf("empty");
-                       break;
+       u_int path_id = 0;
+
+       switch (af<<8 | safi) {
+            case (AFNUM_INET<<8 | SAFNUM_UNICAST):
+            case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
+            case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
+                if (add_path4) {
+                    path_id = GET_BE_U_4(tptr);
+                    tptr += 4;
+                }
+                advance = decode_prefix4(ndo, tptr, len, buf, buflen);
+                if (advance == -1)
+                    ND_PRINT("\n\t    (illegal prefix length)");
+                else if (advance == -2)
+                    break; /* bytes left, but not enough */
+                else
+                    ND_PRINT("\n\t      %s", buf);
+                if (add_path4) {
+                    ND_PRINT("   Path Id: %u", path_id);
+                   advance += 4;

                 }
                 }

+                break;
+            case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
+                advance = decode_labeled_prefix4(ndo, tptr, len, buf, buflen);
+                if (advance == -1)
+                    ND_PRINT("\n\t    (illegal prefix length)");
+                else if (advance == -2)
+                    goto trunc;
+                else if (advance == -3)
+                    break; /* bytes left, but not enough */
+                else
+                    ND_PRINT("\n\t      %s", buf);
+                break;
+            case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
+            case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
+            case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
+                advance = decode_labeled_vpn_prefix4(ndo, tptr, buf, buflen);
+                if (advance == -1)
+                    ND_PRINT("\n\t    (illegal prefix length)");
+                else
+                    ND_PRINT("\n\t      %s", buf);
+                break;
+            case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
+                advance = decode_rt_routing_info(ndo, tptr);
+                break;
+            case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN): /* fall through */
+            case (AFNUM_INET6<<8 | SAFNUM_MULTICAST_VPN):
+                advance = decode_multicast_vpn(ndo, tptr, buf, buflen);
+                if (advance == -1)
+                    ND_PRINT("\n\t    (illegal prefix length)");
+                else if (advance == -2)
+                    goto trunc;
+                else
+                    ND_PRINT("\n\t      %s", buf);
+                break;

 
 

-               while (tptr < pptr + len) {
-                       TCHECK(tptr[0]);
-                        printf("%s", tok2strbuf(bgp_as_path_segment_open_values,
-                                               "?", tptr[0],
-                                               tokbuf, sizeof(tokbuf)));
-                        for (i = 0; i < tptr[1] * 2; i += 2) {
-                            TCHECK2(tptr[2 + i], 2);
-                            printf("%u ", EXTRACT_16BITS(&tptr[2 + i]));
-                        }
-                       TCHECK(tptr[0]);
-                        printf("%s", tok2strbuf(bgp_as_path_segment_close_values,
-                                               "?", tptr[0],
-                                               tokbuf, sizeof(tokbuf)));
-                        TCHECK(tptr[1]);
-                        tptr += 2 + tptr[1] * 2;
-               }
-               break;
-       case BGPTYPE_NEXT_HOP:
-               if (len != 4)
-                       printf("invalid len");
-               else {
-                       TCHECK2(tptr[0], 4);
-                       printf("%s", getname(tptr));
-               }
-               break;
-       case BGPTYPE_MULTI_EXIT_DISC:
-       case BGPTYPE_LOCAL_PREF:
-               if (len != 4)
-                       printf("invalid len");
-               else {
-                       TCHECK2(tptr[0], 4);
-                       printf("%u", EXTRACT_32BITS(tptr));
-               }
-               break;
-       case BGPTYPE_ATOMIC_AGGREGATE:
-               if (len != 0)
-                       printf("invalid len");
-               break;
-       case BGPTYPE_AGGREGATOR:
-               if (len != 6) {
-                       printf("invalid len");
-                       break;
-               }
-               TCHECK2(tptr[0], 6);
-               printf(" AS #%u, origin %s", EXTRACT_16BITS(tptr),
-                       getname(tptr + 2));
-               break;
-       case BGPTYPE_COMMUNITIES:
-               if (len % 4) {
-                       printf("invalid len");
-                       break;
-               }
-               while (tlen>0) {
-                       u_int32_t comm;
-                       TCHECK2(tptr[0], 4);
-                       comm = EXTRACT_32BITS(tptr);
-                       switch (comm) {
-                       case BGP_COMMUNITY_NO_EXPORT:
-                               printf(" NO_EXPORT");
-                               break;
-                       case BGP_COMMUNITY_NO_ADVERT:
-                               printf(" NO_ADVERTISE");
-                               break;
-                       case BGP_COMMUNITY_NO_EXPORT_SUBCONFED:
-                               printf(" NO_EXPORT_SUBCONFED");
-                               break;
-                       default:
-                               printf("%u:%u%s",
-                                       (comm >> 16) & 0xffff,
-                                       comm & 0xffff,
-                                       (tlen>4) ? ", " : "");
-                               break;
-                       }
-                        tlen -=4;
-                        tptr +=4;
-               }
-               break;
-        case BGPTYPE_ORIGINATOR_ID:
-               if (len != 4) {
-                       printf("invalid len");
-                       break;
-               }
-               TCHECK2(tptr[0], 4);
-                printf("%s",getname(tptr));
+            case (AFNUM_INET<<8 | SAFNUM_MDT):
+                advance = decode_mdt_vpn_nlri(ndo, tptr, buf, buflen);
+                if (advance == -1)
+                    ND_PRINT("\n\t    (illegal prefix length)");
+                else if (advance == -2)
+                    goto trunc;
+                else
+                    ND_PRINT("\n\t      %s", buf);

                 break;
                 break;

-        case BGPTYPE_CLUSTER_LIST:
-               if (len % 4) {
-                       printf("invalid len");
-                       break;
-               }
-                while (tlen>0) {
-                       TCHECK2(tptr[0], 4);
-                        printf("%s%s",
-                               getname(tptr),
-                                (tlen>4) ? ", " : "");
-                        tlen -=4;
-                        tptr +=4;
+            case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
+            case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
+            case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
+                if (add_path6) {
+                    path_id = GET_BE_U_4(tptr);
+                    tptr += 4;
+                }
+                advance = decode_prefix6(ndo, tptr, len, buf, buflen);
+                if (advance == -1)
+                    ND_PRINT("\n\t    (illegal prefix length)");
+                else if (advance == -2)
+                    break; /* bytes left, but not enough */
+                else
+                    ND_PRINT("\n\t      %s", buf);
+                if (add_path6) {
+                    ND_PRINT("   Path Id: %u", path_id);
+                   advance += 4;

                 }
                 break;
                 }
                 break;

-       case BGPTYPE_MP_REACH_NLRI:
-               TCHECK2(tptr[0], 3);
-               af = EXTRACT_16BITS(tptr);
-               safi = tptr[2];
-       
-                printf("\n\t    AFI: %s (%u), %sSAFI: %s (%u)",
-                       tok2strbuf(af_values, "Unknown AFI", af,
-                                 tokbuf, sizeof(tokbuf)),
-                       af,
-                       (safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */
-                       tok2strbuf(bgp_safi_values, "Unknown SAFI", safi,
-                                 tokbuf, sizeof(tokbuf)),
-                       safi);
-
-                switch(af<<8 | safi) {
-                case (AFNUM_INET<<8 | SAFNUM_UNICAST):
-                case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
-                case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
-                case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
-                case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
+            case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
+                advance = decode_labeled_prefix6(ndo, tptr, len, buf, buflen);
+                if (advance == -1)
+                    ND_PRINT("\n\t    (illegal prefix length)");
+                else if (advance == -2)
+                    goto trunc;
+                else if (advance == -3)
+                    break; /* bytes left, but not enough */
+                else
+                    ND_PRINT("\n\t      %s", buf);
+                break;
+            case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
+            case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
+            case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
+                advance = decode_labeled_vpn_prefix6(ndo, tptr, buf, buflen);
+                if (advance == -1)
+                    ND_PRINT("\n\t    (illegal prefix length)");
+                else
+                    ND_PRINT("\n\t      %s", buf);
+                break;
+            case (AFNUM_VPLS<<8 | SAFNUM_VPLS):
+            case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
+            case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
+            case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
+                advance = decode_labeled_vpn_l2(ndo, tptr, buf, buflen);
+                if (advance == -1)
+                    ND_PRINT("\n\t    (illegal length)");
+                else if (advance == -2)
+                    goto trunc;
+                else
+                    ND_PRINT("\n\t      %s", buf);
+                break;
+            case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
+            case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
+            case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
+                advance = decode_clnp_prefix(ndo, tptr, buf, buflen);
+                if (advance == -1)
+                    ND_PRINT("\n\t    (illegal prefix length)");
+                else
+                    ND_PRINT("\n\t      %s", buf);
+                break;
+            case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
+            case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
+            case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
+                advance = decode_labeled_vpn_clnp_prefix(ndo, tptr, buf, buflen);
+                if (advance == -1)
+                    ND_PRINT("\n\t    (illegal prefix length)");
+                else
+                    ND_PRINT("\n\t      %s", buf);
+                break;
+            default:
+               /*
+                * This should not happen, we should have been protected
+                * by bgp_mp_af_print()'s return value.
+                */
+                ND_PRINT("\n\t    ERROR: no AFI %u / SAFI %u decoder", af, safi);
+                advance = -4;
+                break;
+       }
+       return advance;
+trunc: /* we rely on the caller to recognize -2 return value */
+       return -2;
+}
+
+static int
+bgp_attr_print(netdissect_options *ndo,
+               uint8_t atype, const u_char *pptr, u_int len,
+               const unsigned attr_set_level)
+{
+    /* allocate space for the largest possible string */
+    char astostr[AS_STR_SIZE];
+    u_int i;
+    uint16_t af;
+    uint8_t safi, snpa, nhlen;
+    int advance;
+    u_int tlen;
+    const u_char *tptr;
+    char buf[MAXHOSTNAMELEN + 100];
+    u_int as_size;
+    int add_path4, add_path6;
+    int ret;
+
+    tptr = pptr;
+    tlen = len;
+
+    switch (atype) {
+    case BGPTYPE_ORIGIN:
+        if (len != 1)
+            ND_PRINT("invalid len");
+        else {
+            ND_PRINT("%s", tok2str(bgp_origin_values,
+                      "Unknown Origin Typecode",
+                      GET_U_1(tptr)));
+        }
+        break;
+
+    /*
+     * Process AS4 byte path and AS2 byte path attributes here.
+     */
+    case BGPTYPE_AS4_PATH:
+    case BGPTYPE_AS_PATH:
+        if (len % 2) {
+            ND_PRINT("invalid len");
+            break;
+        }
+        if (!len) {
+            ND_PRINT("empty");
+            break;
+        }
+
+        /*
+         * BGP updates exchanged between New speakers that support 4
+         * byte AS, ASs are always encoded in 4 bytes. There is no
+         * definitive way to find this, just by the packet's
+         * contents. So, check for packet's TLV's sanity assuming
+         * 2 bytes first, and it does not pass, assume that ASs are
+         * encoded in 4 bytes format and move on.
+         */
+        as_size = bgp_attr_get_as_size(ndo, atype, pptr, len);
+
+        while (tptr < pptr + len) {
+            ND_PRINT("%s", tok2str(bgp_as_path_segment_open_values,
+                      "?", GET_U_1(tptr)));
+            for (i = 0; i < GET_U_1(tptr + 1) * as_size; i += as_size) {
+                ND_TCHECK_LEN(tptr + 2 + i, as_size);
+                ND_PRINT("%s ",
+                          as_printf(ndo, astostr, sizeof(astostr),
+                          as_size == 2 ?
+                              GET_BE_U_2(tptr + i + 2) :
+                              GET_BE_U_4(tptr + i + 2)));
+            }
+            ND_PRINT("%s", tok2str(bgp_as_path_segment_close_values,
+                      "?", GET_U_1(tptr)));
+            tptr += 2 + GET_U_1(tptr + 1) * as_size;
+        }
+        break;
+    case BGPTYPE_NEXT_HOP:
+        if (len != 4)
+            ND_PRINT("invalid len");
+        else {
+            ND_PRINT("%s", GET_IPADDR_STRING(tptr));
+        }
+        break;
+    case BGPTYPE_MULTI_EXIT_DISC:
+    case BGPTYPE_LOCAL_PREF:
+        if (len != 4)
+            ND_PRINT("invalid len");
+        else {
+            ND_PRINT("%u", GET_BE_U_4(tptr));
+        }
+        break;
+    case BGPTYPE_ATOMIC_AGGREGATE:
+        if (len != 0)
+            ND_PRINT("invalid len");
+        break;
+    case BGPTYPE_AGGREGATOR:
+
+        /*
+         * Depending on the AS encoded is of 2 bytes or of 4 bytes,
+         * the length of this PA can be either 6 bytes or 8 bytes.
+         */
+        if (len != 6 && len != 8) {
+            ND_PRINT("invalid len");
+            break;
+        }
+        ND_TCHECK_LEN(tptr, len);
+        if (len == 6) {
+            ND_PRINT(" AS #%s, origin %s",
+                      as_printf(ndo, astostr, sizeof(astostr), GET_BE_U_2(tptr)),
+                      GET_IPADDR_STRING(tptr + 2));
+        } else {
+            ND_PRINT(" AS #%s, origin %s",
+                      as_printf(ndo, astostr, sizeof(astostr),
+                      GET_BE_U_4(tptr)), GET_IPADDR_STRING(tptr + 4));
+        }
+        break;
+    case BGPTYPE_AGGREGATOR4:
+        if (len != 8) {
+            ND_PRINT("invalid len");
+            break;
+        }
+        ND_PRINT(" AS #%s, origin %s",
+                  as_printf(ndo, astostr, sizeof(astostr), GET_BE_U_4(tptr)),
+                  GET_IPADDR_STRING(tptr + 4));
+        break;
+    case BGPTYPE_COMMUNITIES:
+        if (len % 4) {
+            ND_PRINT("invalid len");
+            break;
+        }
+        while (tlen != 0) {
+            uint32_t comm;
+            ND_TCHECK_4(tptr);
+            if (tlen < 4)
+                goto trunc;
+            comm = GET_BE_U_4(tptr);
+            switch (comm) {
+            case BGP_COMMUNITY_NO_EXPORT:
+                ND_PRINT(" NO_EXPORT");
+                break;
+            case BGP_COMMUNITY_NO_ADVERT:
+                ND_PRINT(" NO_ADVERTISE");
+                break;
+            case BGP_COMMUNITY_NO_EXPORT_SUBCONFED:
+                ND_PRINT(" NO_EXPORT_SUBCONFED");
+                break;
+            default:
+                ND_PRINT("%u:%u%s",
+                         (comm >> 16) & 0xffff,
+                         comm & 0xffff,
+                         (tlen>4) ? ", " : "");
+                break;
+            }
+            tlen -=4;
+            tptr +=4;
+        }
+        break;
+    case BGPTYPE_ORIGINATOR_ID:
+        if (len != 4) {
+            ND_PRINT("invalid len");
+            break;
+        }
+        ND_PRINT("%s",GET_IPADDR_STRING(tptr));
+        break;
+    case BGPTYPE_CLUSTER_LIST:
+        if (len % 4) {
+            ND_PRINT("invalid len");
+            break;
+        }
+        while (tlen != 0) {
+            if (tlen < 4)
+                goto trunc;
+            ND_PRINT("%s%s",
+                      GET_IPADDR_STRING(tptr),
+                      (tlen>4) ? ", " : "");
+            tlen -=4;
+            tptr +=4;
+        }
+        break;
+    case BGPTYPE_MP_REACH_NLRI:
+        ND_TCHECK_3(tptr);
+        if (tlen < 3)
+            goto trunc;
+       ret = bgp_mp_af_print(ndo, tptr, tlen, &af, &safi);
+       if (ret == -2)
+           goto trunc;
+       if (ret < 0)
+           break;
+
+        tptr += 3;
+        tlen -= 3;
+
+        ND_TCHECK_1(tptr);
+        if (tlen < 1)
+            goto trunc;
+        nhlen = GET_U_1(tptr);
+        tptr++;
+        tlen--;
+
+        if (nhlen) {
+            u_int nnh = 0;
+            uint8_t tnhlen = nhlen;
+            if (tlen < tnhlen)
+                goto trunc;
+            ND_PRINT("\n\t    nexthop: ");
+            while (tnhlen != 0) {
+                if (nnh++ > 0) {
+                    ND_PRINT(", " );
+                }
+                switch(af<<8 | safi) {
+                case (AFNUM_INET<<8 | SAFNUM_UNICAST):
+                case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
+                case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
+                case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
+                case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
+                case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN):
+                case (AFNUM_INET<<8 | SAFNUM_MDT):
+                    if (tnhlen < sizeof(nd_ipv4)) {
+                        ND_PRINT("invalid len");
+                        tptr += tnhlen;
+                        tlen -= tnhlen;
+                        tnhlen = 0;
+                    } else {
+                        ND_PRINT("%s",GET_IPADDR_STRING(tptr));
+                        tptr += sizeof(nd_ipv4);
+                        tnhlen -= sizeof(nd_ipv4);
+                        tlen -= sizeof(nd_ipv4);
+                    }
+                    break;

                 case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
                 case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
                 case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
                 case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
                 case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
                 case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):

-                case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN):
-#ifdef INET6
+                    if (tnhlen < sizeof(nd_ipv4)+BGP_VPN_RD_LEN) {
+                        ND_PRINT("invalid len");
+                        tptr += tnhlen;
+                        tlen -= tnhlen;
+                        tnhlen = 0;
+                    } else {
+                        ND_PRINT("RD: %s, %s",
+                                  bgp_vpn_rd_print(ndo, tptr),
+                                  GET_IPADDR_STRING(tptr+BGP_VPN_RD_LEN));
+                        tptr += (sizeof(nd_ipv4)+BGP_VPN_RD_LEN);
+                        tlen -= (sizeof(nd_ipv4)+BGP_VPN_RD_LEN);
+                        tnhlen -= (sizeof(nd_ipv4)+BGP_VPN_RD_LEN);
+                    }
+                    break;

                 case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
                 case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
                 case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
                 case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
                 case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
                 case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
                 case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
                 case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):

+                    if (tnhlen < sizeof(nd_ipv6)) {
+                        ND_PRINT("invalid len");
+                        tptr += tnhlen;
+                        tlen -= tnhlen;
+                        tnhlen = 0;
+                    } else {
+                        ND_PRINT("%s", GET_IP6ADDR_STRING(tptr));
+                        tptr += sizeof(nd_ipv6);
+                        tlen -= sizeof(nd_ipv6);
+                        tnhlen -= sizeof(nd_ipv6);
+                    }
+                    break;

                 case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
                 case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
                 case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
                 case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
                 case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
                 case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):

-#endif
+                    if (tnhlen < sizeof(nd_ipv6)+BGP_VPN_RD_LEN) {
+                        ND_PRINT("invalid len");
+                        tptr += tnhlen;
+                        tlen -= tnhlen;
+                        tnhlen = 0;
+                    } else {
+                        ND_PRINT("RD: %s, %s",
+                                  bgp_vpn_rd_print(ndo, tptr),
+                                  GET_IP6ADDR_STRING(tptr+BGP_VPN_RD_LEN));
+                        tptr += (sizeof(nd_ipv6)+BGP_VPN_RD_LEN);
+                        tlen -= (sizeof(nd_ipv6)+BGP_VPN_RD_LEN);
+                        tnhlen -= (sizeof(nd_ipv6)+BGP_VPN_RD_LEN);
+                    }
+                    break;
+                case (AFNUM_VPLS<<8 | SAFNUM_VPLS):
+                case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
+                case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
+                case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
+                    if (tnhlen < sizeof(nd_ipv4)) {
+                        ND_PRINT("invalid len");
+                        tptr += tnhlen;
+                        tlen -= tnhlen;
+                        tnhlen = 0;
+                    } else {
+                        ND_PRINT("%s", GET_IPADDR_STRING(tptr));
+                        tptr += (sizeof(nd_ipv4));
+                        tlen -= (sizeof(nd_ipv4));
+                        tnhlen -= (sizeof(nd_ipv4));
+                    }
+                    break;

                 case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
                 case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
                 case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
                 case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
                 case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
                 case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):

+                    ND_PRINT("%s", GET_ISONSAP_STRING(tptr, tnhlen));
+                    tptr += tnhlen;
+                    tlen -= tnhlen;
+                    tnhlen = 0;
+                    break;
+

                 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
                 case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
                 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
                 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
                 case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
                 case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):

-                case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
-                case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
-                case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
-                case (AFNUM_VPLS<<8 | SAFNUM_VPLS):
+                    if (tnhlen < BGP_VPN_RD_LEN+1) {
+                        ND_PRINT("invalid len");
+                        tptr += tnhlen;
+                        tlen -= tnhlen;
+                        tnhlen = 0;
+                    } else {
+                        ND_TCHECK_LEN(tptr, tnhlen);
+                        ND_PRINT("RD: %s, %s",
+                                  bgp_vpn_rd_print(ndo, tptr),
+                                  GET_ISONSAP_STRING(tptr+BGP_VPN_RD_LEN,tnhlen-BGP_VPN_RD_LEN));
+                        /* rfc986 mapped IPv4 address ? */
+                        if (GET_BE_U_4(tptr + BGP_VPN_RD_LEN) ==  0x47000601)
+                            ND_PRINT(" = %s", GET_IPADDR_STRING(tptr+BGP_VPN_RD_LEN+4));
+                        /* rfc1888 mapped IPv6 address ? */
+                        else if (GET_BE_U_3(tptr + BGP_VPN_RD_LEN) ==  0x350000)
+                            ND_PRINT(" = %s", GET_IP6ADDR_STRING(tptr+BGP_VPN_RD_LEN+3));
+                        tptr += tnhlen;
+                        tlen -= tnhlen;
+                        tnhlen = 0;
+                    }

                     break;
                 default:
                     break;
                 default:

-                    TCHECK2(tptr[0], tlen);
-                    printf("\n\t    no AFI %u / SAFI %u decoder",af,safi);
-                    if (vflag <= 1)
-                        print_unknown_data(tptr,"\n\t    ",tlen);
+                   /*
+                    * bgp_mp_af_print() should have saved us from
+                    * an unsupported AFI/SAFI.
+                    */
+                    ND_PRINT("ERROR: no AFI %u/SAFI %u nexthop decoder", af, safi);
+                    tptr += tnhlen;
+                    tlen -= tnhlen;
+                    tnhlen = 0;

                     goto done;
                     break;
                 }
                     goto done;
                     break;
                 }

+            }
+        }
+        ND_PRINT(", nh-length: %u", nhlen);
+
+        /* As per RFC 2858; this is reserved in RFC 4760 */
+        if (tlen < 1)
+            goto trunc;
+        snpa = GET_U_1(tptr);
+        tptr++;
+        tlen--;
+
+        if (snpa) {
+            ND_PRINT("\n\t    %u SNPA", snpa);
+            for (/*nothing*/; snpa != 0; snpa--) {
+                uint8_t snpalen;
+               if (tlen < 1)
+                   goto trunc;
+                snpalen = GET_U_1(tptr);
+                ND_PRINT("\n\t      %u bytes", snpalen);
+                tptr++;
+                tlen--;
+                if (tlen < snpalen)
+                    goto trunc;
+                ND_TCHECK_LEN(tptr, snpalen);
+                tptr += snpalen;
+                tlen -= snpalen;
+            }
+        } else {
+            ND_PRINT(", no SNPA");
+        }

 
 

-                tptr +=3;
+        add_path4 = check_add_path(ndo, tptr, (len-ND_BYTES_BETWEEN(tptr, pptr)), 32);
+        add_path6 = check_add_path(ndo, tptr, (len-ND_BYTES_BETWEEN(tptr, pptr)), 128);

 
 

-               TCHECK(tptr[0]);
-               nhlen = tptr[0];
-                tlen = nhlen;
-                tptr++;
+        while (tptr < pptr + len) {
+            advance = bgp_nlri_print(ndo, af, safi, tptr, len, buf, sizeof(buf),
+                    add_path4, add_path6);
+            if (advance == -2)
+                goto trunc;
+            if (advance < 0)
+                break;
+            tptr += advance;
+        }
+        break;

 
 

-               if (tlen) {
-                    printf("\n\t    nexthop: ");
-                    while (tlen > 0) {
-                        switch(af<<8 | safi) {
-                        case (AFNUM_INET<<8 | SAFNUM_UNICAST):
-                        case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
-                        case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
-                        case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
-                        case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
-                        case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN):
-                            if (tlen < (int)sizeof(struct in_addr)) {
-                                printf("invalid len");
-                                tlen = 0;
-                            } else {
-                                TCHECK2(tptr[0], sizeof(struct in_addr));
-                                printf("%s",getname(tptr));
-                                tlen -= sizeof(struct in_addr);
-                                tptr += sizeof(struct in_addr);
-                            }
-                            break;
-                        case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
-                        case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
-                        case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
-                            if (tlen < (int)(sizeof(struct in_addr)+BGP_VPN_RD_LEN)) {
-                                printf("invalid len");
-                                tlen = 0;
-                            } else {
-                                TCHECK2(tptr[0], sizeof(struct in_addr)+BGP_VPN_RD_LEN);
-                                printf("RD: %s, %s",
-                                       bgp_vpn_rd_print(tptr),
-                                       getname(tptr+BGP_VPN_RD_LEN));
-                                tlen -= (sizeof(struct in_addr)+BGP_VPN_RD_LEN);
-                                tptr += (sizeof(struct in_addr)+BGP_VPN_RD_LEN);
-                            }
-                            break;
-#ifdef INET6
-                        case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
-                        case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
-                        case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
-                        case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
-                            if (tlen < (int)sizeof(struct in6_addr)) {
-                                printf("invalid len");
-                                tlen = 0;
-                            } else {
-                                TCHECK2(tptr[0], sizeof(struct in6_addr));
-                                printf("%s", getname6(tptr));
-                                tlen -= sizeof(struct in6_addr);
-                                tptr += sizeof(struct in6_addr);
-                            }
-                            break;
-                        case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
-                        case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
-                        case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
-                            if (tlen < (int)(sizeof(struct in6_addr)+BGP_VPN_RD_LEN)) {
-                                printf("invalid len");
-                                tlen = 0;
-                            } else {
-                                TCHECK2(tptr[0], sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
-                                printf("RD: %s, %s",
-                                       bgp_vpn_rd_print(tptr),
-                                       getname6(tptr+BGP_VPN_RD_LEN));
-                                tlen -= (sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
-                                tptr += (sizeof(struct in6_addr)+BGP_VPN_RD_LEN);
-                            }
-                            break;
-#endif
-                        case (AFNUM_VPLS<<8 | SAFNUM_VPLS):
-                        case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
-                        case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
-                        case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
-                            if (tlen < (int)sizeof(struct in_addr)) {
-                                printf("invalid len");
-                                tlen = 0;
-                            } else {
-                                TCHECK2(tptr[0], sizeof(struct in_addr));
-                                printf("%s", getname(tptr));
-                                tlen -= (sizeof(struct in_addr));
-                                tptr += (sizeof(struct in_addr));
-                            }
-                            break;
-                        case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
-                        case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
-                        case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
-                            TCHECK2(tptr[0], tlen);
-                            printf("%s",isonsap_string(tptr,tlen));
-                            tptr += tlen;
-                            tlen = 0;
-                            break;
-
-                        case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
-                        case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
-                        case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
-                            if (tlen < BGP_VPN_RD_LEN+1) {
-                                printf("invalid len");
-                                tlen = 0;
-                            } else {
-                                TCHECK2(tptr[0], tlen);
-                                printf("RD: %s, %s",
-                                       bgp_vpn_rd_print(tptr),
-                                       isonsap_string(tptr+BGP_VPN_RD_LEN,tlen-BGP_VPN_RD_LEN));
-                                /* rfc986 mapped IPv4 address ? */
-                                if (EXTRACT_32BITS(tptr+BGP_VPN_RD_LEN) ==  0x47000601)
-                                    printf(" = %s", getname(tptr+BGP_VPN_RD_LEN+4));
-#ifdef INET6
-                                /* rfc1888 mapped IPv6 address ? */
-                                else if (EXTRACT_24BITS(tptr+BGP_VPN_RD_LEN) ==  0x350000)
-                                    printf(" = %s", getname6(tptr+BGP_VPN_RD_LEN+3));
-#endif
-                                tptr += tlen;
-                                tlen = 0;
-                            }
-                            break;
-                        default:
-                            TCHECK2(tptr[0], tlen);
-                            printf("no AFI %u/SAFI %u decoder",af,safi);
-                            if (vflag <= 1)
-                                print_unknown_data(tptr,"\n\t    ",tlen);
-                            tptr += tlen;
-                            tlen = 0;
-                            goto done;
-                            break;
-                        }
-                    }
-               }
-                printf(", nh-length: %u", nhlen);
-               tptr += tlen;
-
-               TCHECK(tptr[0]);
-               snpa = tptr[0];
-               tptr++;
-
-               if (snpa) {
-                       printf("\n\t    %u SNPA", snpa);
-                       for (/*nothing*/; snpa > 0; snpa--) {
-                               TCHECK(tptr[0]);
-                               printf("\n\t      %d bytes", tptr[0]);
-                               tptr += tptr[0] + 1;
-                       }
-               } else {
-                       printf(", no SNPA");
-                }
+    case BGPTYPE_MP_UNREACH_NLRI:
+        ND_TCHECK_LEN(tptr, BGP_MP_NLRI_MINSIZE);
+       ret = bgp_mp_af_print(ndo, tptr, tlen, &af, &safi);
+       if (ret == -2)
+           goto trunc;
+       if (ret < 0)
+           break;

 
 

-               while (len - (tptr - pptr) > 0) {
-                    switch (af<<8 | safi) {
-                    case (AFNUM_INET<<8 | SAFNUM_UNICAST):
-                    case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
-                    case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
-                        advance = decode_prefix4(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-                    case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
-                        advance = decode_labeled_prefix4(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-                    case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
-                    case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
-                    case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
-                        advance = decode_labeled_vpn_prefix4(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-                    case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
-                        advance = decode_rt_routing_info(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-                    case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN):
-                        advance = decode_multicast_vpn(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-#ifdef INET6
-                    case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
-                    case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
-                    case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
-                        advance = decode_prefix6(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-                    case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
-                        advance = decode_labeled_prefix6(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-                    case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
-                    case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
-                    case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
-                        advance = decode_labeled_vpn_prefix6(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-#endif
-                    case (AFNUM_VPLS<<8 | SAFNUM_VPLS):
-                    case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
-                    case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
-                    case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
-                        advance = decode_labeled_vpn_l2(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);         
-                        break;
-                    case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
-                    case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
-                    case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
-                        advance = decode_clnp_prefix(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-                    case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
-                    case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
-                    case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
-                        advance = decode_labeled_vpn_clnp_prefix(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;                                   
-                    default:
-                        TCHECK2(*tptr,tlen);
-                        printf("\n\t    no AFI %u / SAFI %u decoder",af,safi);
-                        if (vflag <= 1)
-                            print_unknown_data(tptr,"\n\t    ",tlen);
-                        advance = 0;
-                        tptr = pptr + len;
-                        break;
-                    }
-                    if (advance < 0)
-                        break;
-                    tptr += advance;
-               }
-        done:
-               break;
-
-       case BGPTYPE_MP_UNREACH_NLRI:
-               TCHECK2(tptr[0], BGP_MP_NLRI_MINSIZE);
-               af = EXTRACT_16BITS(tptr);
-               safi = tptr[2];
-
-                printf("\n\t    AFI: %s (%u), %sSAFI: %s (%u)",
-                       tok2strbuf(af_values, "Unknown AFI", af,
-                                 tokbuf, sizeof(tokbuf)),
-                       af,
-                       (safi>128) ? "vendor specific " : "", /* 128 is meanwhile wellknown */
-                       tok2strbuf(bgp_safi_values, "Unknown SAFI", safi,
-                                 tokbuf, sizeof(tokbuf)),
-                       safi);
-
-                if (len == BGP_MP_NLRI_MINSIZE)
-                    printf("\n\t      End-of-Rib Marker (empty NLRI)");
-
-               tptr += 3;
-                
-               while (len - (tptr - pptr) > 0) {
-                    switch (af<<8 | safi) {
-                    case (AFNUM_INET<<8 | SAFNUM_UNICAST):
-                    case (AFNUM_INET<<8 | SAFNUM_MULTICAST):
-                    case (AFNUM_INET<<8 | SAFNUM_UNIMULTICAST):
-                        advance = decode_prefix4(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-                    case (AFNUM_INET<<8 | SAFNUM_LABUNICAST):
-                        advance = decode_labeled_prefix4(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-                    case (AFNUM_INET<<8 | SAFNUM_VPNUNICAST):
-                    case (AFNUM_INET<<8 | SAFNUM_VPNMULTICAST):
-                    case (AFNUM_INET<<8 | SAFNUM_VPNUNIMULTICAST):
-                        advance = decode_labeled_vpn_prefix4(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-#ifdef INET6
-                    case (AFNUM_INET6<<8 | SAFNUM_UNICAST):
-                    case (AFNUM_INET6<<8 | SAFNUM_MULTICAST):
-                    case (AFNUM_INET6<<8 | SAFNUM_UNIMULTICAST):
-                        advance = decode_prefix6(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-                    case (AFNUM_INET6<<8 | SAFNUM_LABUNICAST):
-                        advance = decode_labeled_prefix6(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-                    case (AFNUM_INET6<<8 | SAFNUM_VPNUNICAST):
-                    case (AFNUM_INET6<<8 | SAFNUM_VPNMULTICAST):
-                    case (AFNUM_INET6<<8 | SAFNUM_VPNUNIMULTICAST):
-                        advance = decode_labeled_vpn_prefix6(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-#endif
-                    case (AFNUM_VPLS<<8 | SAFNUM_VPLS):
-                    case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNICAST):
-                    case (AFNUM_L2VPN<<8 | SAFNUM_VPNMULTICAST):
-                    case (AFNUM_L2VPN<<8 | SAFNUM_VPNUNIMULTICAST):
-                        advance = decode_labeled_vpn_l2(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);         
-                        break;
-                    case (AFNUM_NSAP<<8 | SAFNUM_UNICAST):
-                    case (AFNUM_NSAP<<8 | SAFNUM_MULTICAST):
-                    case (AFNUM_NSAP<<8 | SAFNUM_UNIMULTICAST):
-                        advance = decode_clnp_prefix(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;
-                    case (AFNUM_NSAP<<8 | SAFNUM_VPNUNICAST):
-                    case (AFNUM_NSAP<<8 | SAFNUM_VPNMULTICAST):
-                    case (AFNUM_NSAP<<8 | SAFNUM_VPNUNIMULTICAST):
-                        advance = decode_labeled_vpn_clnp_prefix(tptr, buf, sizeof(buf));
-                        if (advance == -1)
-                            printf("\n\t    (illegal prefix length)");
-                        else if (advance == -2)
-                            goto trunc;
-                        else
-                            printf("\n\t      %s", buf);
-                        break;                                   
-                    default:
-                        TCHECK2(*(tptr-3),tlen);
-                        printf("no AFI %u / SAFI %u decoder",af,safi);
-                        if (vflag <= 1)
-                            print_unknown_data(tptr-3,"\n\t    ",tlen);                                        
-                        advance = 0;
-                        tptr = pptr + len;
-                        break;
-                    }
-                    if (advance < 0)
-                        break;
-                    tptr += advance;
-               }
-               break;
-        case BGPTYPE_EXTD_COMMUNITIES:
-               if (len % 8) {
-                       printf("invalid len");
-                       break;
-               }
-                while (tlen>0) {
-                    u_int16_t extd_comm;
-
-                    TCHECK2(tptr[0], 2);
-                    extd_comm=EXTRACT_16BITS(tptr);
-
-                   printf("\n\t    %s (0x%04x), Flags [%s]",
-                          tok2strbuf(bgp_extd_comm_subtype_values,
-                                     "unknown extd community typecode",
-                                     extd_comm, tokbuf, sizeof(tokbuf)),
-                          extd_comm,
-                          bittok2str(bgp_extd_comm_flag_values, "none", extd_comm));
-
-                    TCHECK2(*(tptr+2), 6);
-                    switch(extd_comm) {
-                    case BGP_EXT_COM_RT_0:
-                    case BGP_EXT_COM_RO_0:
-                        printf(": %u:%s",
-                               EXTRACT_16BITS(tptr+2),
-                               getname(tptr+4));
-                        break;
-                    case BGP_EXT_COM_RT_1:
-                    case BGP_EXT_COM_RO_1:
-                    case BGP_EXT_COM_VRF_RT_IMP:
-                        printf(": %s:%u",
-                               getname(tptr+2),
-                               EXTRACT_16BITS(tptr+6));
-                        break;
-                    case BGP_EXT_COM_RT_2:
-                    case BGP_EXT_COM_RO_2:
-                        printf(": %u:%u",
-                               EXTRACT_32BITS(tptr+2),
-                               EXTRACT_16BITS(tptr+6));
-                        break;
-                    case BGP_EXT_COM_LINKBAND:
-                       bw.i = EXTRACT_32BITS(tptr+2);
-                        printf(": bandwidth: %.3f Mbps",
-                               bw.f*8/1000000);
-                        break;
-                    case BGP_EXT_COM_CISCO_MCAST:
-                        printf(": AS %u, group %s",
-                               EXTRACT_16BITS(tptr+2),
-                               getname(tptr+4));
-                        break;
-                    case BGP_EXT_COM_VPN_ORIGIN:
-                    case BGP_EXT_COM_VPN_ORIGIN2:
-                    case BGP_EXT_COM_VPN_ORIGIN3:
-                    case BGP_EXT_COM_VPN_ORIGIN4:
-                    case BGP_EXT_COM_OSPF_RID:
-                    case BGP_EXT_COM_OSPF_RID2:
-                        printf("%s", getname(tptr+2));
-                        break;
-                    case BGP_EXT_COM_OSPF_RTYPE:
-                    case BGP_EXT_COM_OSPF_RTYPE2: 
-                        printf(": area:%s, router-type:%s, metric-type:%s%s",
-                               getname(tptr+2),
-                               tok2strbuf(bgp_extd_comm_ospf_rtype_values,
-                                         "unknown (0x%02x)",
-                                         *(tptr+6),
-                                         tokbuf, sizeof(tokbuf)),
-                               (*(tptr+7) &  BGP_OSPF_RTYPE_METRIC_TYPE) ? "E2" : "",
-                               ((*(tptr+6) == BGP_OSPF_RTYPE_EXT) || (*(tptr+6) == BGP_OSPF_RTYPE_NSSA)) ? "E1" : "");
-                        break;
-                    case BGP_EXT_COM_L2INFO:
-                        printf(": %s Control Flags [0x%02x]:MTU %u",
-                               tok2strbuf(l2vpn_encaps_values,
-                                         "unknown encaps",
-                                         *(tptr+2),
-                                         tokbuf, sizeof(tokbuf)),
-                                       *(tptr+3),
-                               EXTRACT_16BITS(tptr+4));
-                        break;
-                    case BGP_EXT_COM_SOURCE_AS:
-                        printf(": AS %u", EXTRACT_16BITS(tptr+2));
-                        break;
-                    default:
-                        TCHECK2(*tptr,8);
-                        print_unknown_data(tptr,"\n\t      ",8);
-                        break;
-                    }
-                    tlen -=8;
-                    tptr +=8;
-                }
+        if (len == BGP_MP_NLRI_MINSIZE)
+            ND_PRINT("\n\t      End-of-Rib Marker (empty NLRI)");
+
+        tptr += 3;
+
+        add_path4 = check_add_path(ndo, tptr, (len-ND_BYTES_BETWEEN(tptr, pptr)), 32);
+        add_path6 = check_add_path(ndo, tptr, (len-ND_BYTES_BETWEEN(tptr, pptr)), 128);
+
+        while (tptr < pptr + len) {
+            advance = bgp_nlri_print(ndo, af, safi, tptr, len, buf, sizeof(buf),
+                    add_path4, add_path6);
+            if (advance == -2)
+                goto trunc;
+            if (advance < 0)

                 break;
                 break;

+            tptr += advance;
+        }
+        break;
+    case BGPTYPE_EXTD_COMMUNITIES:
+        if (len % 8) {
+            ND_PRINT("invalid len");
+            break;
+        }
+        while (tlen != 0) {
+            uint16_t extd_comm;
+
+            ND_TCHECK_2(tptr);
+            if (tlen < 2)
+                goto trunc;
+            extd_comm=GET_BE_U_2(tptr);
+
+            ND_PRINT("\n\t    %s (0x%04x), Flags [%s]",
+                      tok2str(bgp_extd_comm_subtype_values,
+                              "unknown extd community typecode",
+                              extd_comm),
+                      extd_comm,
+                      bittok2str(bgp_extd_comm_flag_values, "none", extd_comm));
+
+            ND_TCHECK_8(tptr);
+            if (tlen < 8)
+                goto trunc;
+            ND_PRINT(": ");
+            bgp_extended_community_print(ndo, tptr);
+            tlen -= 8;
+            tptr += 8;
+        }
+        break;

 
 

-        case BGPTYPE_PMSI_TUNNEL:
-        {
-                u_int8_t tunnel_type, flags;
-            
-                tunnel_type = *(tptr+1);
-                flags = *tptr;
-                tlen = len;
-
-                TCHECK2(tptr[0], 5);
-                printf("\n\t    Tunnel-type %s (%u), Flags [%s], MPLS Label %u",
-                       tok2str(bgp_pmsi_tunnel_values, "Unknown", tunnel_type),
-                       tunnel_type,
-                       bittok2str(bgp_pmsi_flag_values, "none", flags),
-                       EXTRACT_24BITS(tptr+2)>>4);
-
-                tptr +=5;
-                tlen -= 5;
-
-                switch (tunnel_type) {
-                case BGP_PMSI_TUNNEL_PIM_SSM:
-                    TCHECK2(tptr[0], 8);
-                    printf("\n\t      P-Root-Node %s, P-Group %s",
-                           ipaddr_string(tptr),
-                           ipaddr_string(tptr+4));
-                    break;
+    case BGPTYPE_PMSI_TUNNEL:
+    {
+        uint8_t tunnel_type, flags;
+
+        ND_TCHECK_5(tptr);
+        if (tlen < 5)
+            goto trunc;
+        flags = GET_U_1(tptr);
+        tunnel_type = GET_U_1(tptr + 1);
+
+        ND_PRINT("\n\t    Tunnel-type %s (%u), Flags [%s], MPLS Label %u",
+                  tok2str(bgp_pmsi_tunnel_values, "Unknown", tunnel_type),
+                  tunnel_type,
+                  bittok2str(bgp_pmsi_flag_values, "none", flags),
+                  GET_BE_U_3(tptr + 2)>>4);
+
+        tptr +=5;
+        tlen -= 5;
+
+        switch (tunnel_type) {
+        case BGP_PMSI_TUNNEL_PIM_SM: /* fall through */
+        case BGP_PMSI_TUNNEL_PIM_BIDIR:
+            ND_PRINT("\n\t      Sender %s, P-Group %s",
+                      GET_IPADDR_STRING(tptr),
+                      GET_IPADDR_STRING(tptr+4));
+            break;

 
 

-                    /*
-                     * no Tunnel-ID printing, just hexdumping for now
-                     * you are welcome to contribute code ;-)
-                     */
-                case BGP_PMSI_TUNNEL_RSVP_P2MP:
-                case BGP_PMSI_TUNNEL_LDP_P2MP:
-                case BGP_PMSI_TUNNEL_PIM_SM:
-                case BGP_PMSI_TUNNEL_PIM_BIDIR:
-                case BGP_PMSI_TUNNEL_INGRESS:
-                case BGP_PMSI_TUNNEL_LDP_MP2MP:
-                default:
-                    if (vflag <= 1) {
-                        print_unknown_data(tptr,"\n\t      ",tlen);
-                    }
-                }
+        case BGP_PMSI_TUNNEL_PIM_SSM:
+            ND_PRINT("\n\t      Root-Node %s, P-Group %s",
+                      GET_IPADDR_STRING(tptr),
+                      GET_IPADDR_STRING(tptr+4));
+            break;
+        case BGP_PMSI_TUNNEL_INGRESS:
+            ND_PRINT("\n\t      Tunnel-Endpoint %s",
+                      GET_IPADDR_STRING(tptr));
+            break;
+        case BGP_PMSI_TUNNEL_LDP_P2MP: /* fall through */
+        case BGP_PMSI_TUNNEL_LDP_MP2MP:
+            ND_PRINT("\n\t      Root-Node %s, LSP-ID 0x%08x",
+                      GET_IPADDR_STRING(tptr),
+                      GET_BE_U_4(tptr + 4));
+            break;
+        case BGP_PMSI_TUNNEL_RSVP_P2MP:
+            ND_PRINT("\n\t      Extended-Tunnel-ID %s, P2MP-ID 0x%08x",
+                      GET_IPADDR_STRING(tptr),
+                      GET_BE_U_4(tptr + 4));
+            break;
+        default:
+            if (ndo->ndo_vflag <= 1) {
+                print_unknown_data(ndo, tptr, "\n\t      ", tlen);
+            }
+        }
+        break;
+    }
+    case BGPTYPE_AIGP:
+    {
+        uint8_t type;
+        uint16_t length;
+
+        while (tlen >= 3) {
+            type = GET_U_1(tptr);
+            length = GET_BE_U_2(tptr + 1);
+            tptr += 3;
+            tlen -= 3;
+
+            ND_PRINT("\n\t    %s TLV (%u), length %u",
+                      tok2str(bgp_aigp_values, "Unknown", type),
+                      type, length);
+
+            if (length < 3)
+                goto trunc;
+            length -= 3;
+
+            /*
+             * Check if we can read the TLV data.
+             */
+            if (tlen < length)
+                goto trunc;
+
+            switch (type) {
+
+            case BGP_AIGP_TLV:
+                if (length < 8)
+                    goto trunc;
+                ND_PRINT(", metric %" PRIu64,
+                          GET_BE_U_8(tptr));

                 break;
                 break;

+
+            default:
+                if (ndo->ndo_vflag <= 1) {
+                    print_unknown_data(ndo, tptr,"\n\t      ", length);
+                }
+            }
+
+            tptr += length;
+            tlen -= length;

         }
         }

-        case BGPTYPE_ATTR_SET:
-                TCHECK2(tptr[0], 4);
-                printf("\n\t    Origin AS: %u", EXTRACT_32BITS(tptr));
-                tptr+=4;
-                len -=4;
-
-                while (len >= 2 ) {
-                    int alen;
-                    struct bgp_attr bgpa;
-                    
-                    TCHECK2(tptr[0], sizeof(bgpa));
-                    memcpy(&bgpa, tptr, sizeof(bgpa));
-                    alen = bgp_attr_len(&bgpa);
-                    tptr += bgp_attr_off(&bgpa);
-                    len -= bgp_attr_off(&bgpa);
-                    
-                    printf("\n\t      %s (%u), length: %u",
-                           tok2strbuf(bgp_attr_values,
-                                     "Unknown Attribute", bgpa.bgpa_type,
-                                     tokbuf, sizeof(tokbuf)),
-                           bgpa.bgpa_type,
-                           alen);
-                    
-                    if (bgpa.bgpa_flags) {
-                        printf(", Flags [%s%s%s%s",
-                               bgpa.bgpa_flags & 0x80 ? "O" : "",
-                               bgpa.bgpa_flags & 0x40 ? "T" : "",
-                               bgpa.bgpa_flags & 0x20 ? "P" : "",
-                               bgpa.bgpa_flags & 0x10 ? "E" : "");
-                        if (bgpa.bgpa_flags & 0xf)
-                            printf("+%x", bgpa.bgpa_flags & 0xf);
-                        printf("]: ");
-                    }
-                    /* FIXME check for recursion */
-                    if (!bgp_attr_print(&bgpa, tptr, alen))
-                        return 0;
-                    tptr += alen;
-                    len -= alen;
-               }
+        break;
+    }
+    case BGPTYPE_ATTR_SET:
+        ND_TCHECK_4(tptr);
+        if (len < 4)
+            goto trunc;
+        ND_PRINT("\n\t    Origin AS: %s",
+                  as_printf(ndo, astostr, sizeof(astostr), GET_BE_U_4(tptr)));
+        tptr += 4;
+        len -= 4;
+
+        while (len) {
+            u_int aflags, alenlen, alen;
+
+            ND_TCHECK_2(tptr);
+            if (len < 2) {
+                ND_PRINT(" [path attr too short]");
+                tptr += len;

                 break;
                 break;

-           
+            }
+            aflags = GET_U_1(tptr);
+            atype = GET_U_1(tptr + 1);
+            tptr += 2;
+            len -= 2;
+            alenlen = bgp_attr_lenlen(aflags, tptr);
+            ND_TCHECK_LEN(tptr, alenlen);
+            if (len < alenlen) {
+                ND_PRINT(" [path attr too short]");
+                tptr += len;
+                break;
+            }
+            alen = bgp_attr_len(aflags, tptr);
+            tptr += alenlen;
+            len -= alenlen;
+
+            ND_PRINT("\n\t      %s (%u), length: %u",
+                      tok2str(bgp_attr_values,
+                              "Unknown Attribute", atype),
+                      atype,
+                      alen);
+
+            if (aflags) {
+                ND_PRINT(", Flags [%s%s%s%s",
+                          aflags & 0x80 ? "O" : "",
+                          aflags & 0x40 ? "T" : "",
+                          aflags & 0x20 ? "P" : "",
+                          aflags & 0x10 ? "E" : "");
+                if (aflags & 0xf)
+                    ND_PRINT("+%x", aflags & 0xf);
+                ND_PRINT("]");
+            }
+            ND_PRINT(": ");
+            if (len < alen) {
+                ND_PRINT(" [path attr too short]");
+                tptr += len;
+                break;
+            }
+            /*
+             * The protocol encoding per se allows ATTR_SET to be nested
+             * as many times as the message can accommodate. This printer
+             * used to be able to recurse into ATTR_SET contents until the
+             * stack exhaustion, but now there is a limit on that (if live
+             * protocol exchange goes that many levels deep, something is
+             * probably wrong anyway). Feel free to refine this value if
+             * you can find the spec with respective normative text.
+             */
+            if (attr_set_level == 10)
+                ND_PRINT("(too many nested levels, not recursing)");
+            else if (!bgp_attr_print(ndo, atype, tptr, alen, attr_set_level + 1))
+                return 0;
+            tptr += alen;
+            len -= alen;
+        }
+        break;

 
 

-       default:
-           TCHECK2(*pptr,len);
-            printf("\n\t    no Attribute %u decoder",attr->bgpa_type); /* we have no decoder for the attribute */
-            if (vflag <= 1)
-                print_unknown_data(pptr,"\n\t    ",len);
+    case BGPTYPE_LARGE_COMMUNITY:
+        if (len == 0 || len % 12) {
+            ND_PRINT("invalid len");

             break;
             break;

-       }
-        if (vflag > 1 && len) { /* omit zero length attributes*/
-            TCHECK2(*pptr,len);
-            print_unknown_data(pptr,"\n\t    ",len);

         }
         }

-        return 1;
+        ND_PRINT("\n\t    ");
+        while (len != 0) {
+            ND_PRINT("%u:%u:%u%s",
+                      GET_BE_U_4(tptr),
+                      GET_BE_U_4(tptr + 4),
+                      GET_BE_U_4(tptr + 8),
+                      (len > 12) ? ", " : "");
+            tptr += 12;
+            /*
+             * len will always be a multiple of 12, as per the above,
+             * so this will never underflow.
+             */
+            len -= 12;
+        }
+        break;
+    default:
+        ND_TCHECK_LEN(pptr, len);
+        ND_PRINT("\n\t    no Attribute %u decoder", atype); /* we have no decoder for the attribute */
+        if (ndo->ndo_vflag <= 1)
+            print_unknown_data(ndo, pptr, "\n\t    ", len);
+        break;
+    }
+done:
+    if (ndo->ndo_vflag > 1 && len) { /* omit zero length attributes*/
+        ND_TCHECK_LEN(pptr, len);
+        print_unknown_data(ndo, pptr, "\n\t    ", len);
+    }
+    return 1;

 
 trunc:
 
 trunc:

-        return 0;
+    return 0;

 }
 
 static void
 }
 
 static void

-bgp_open_print(const u_char *dat, int length)
+bgp_capabilities_print(netdissect_options *ndo,
+                       const u_char *opt, u_int caps_len)

 {
 {

-       struct bgp_open bgpo;
-       struct bgp_opt bgpopt;
-       const u_char *opt;
-       int i,cap_type,cap_len,tcap_len,cap_offset;
-       char tokbuf[TOKBUFSIZE];
-       char tokbuf2[TOKBUFSIZE];
-
-       TCHECK2(dat[0], BGP_OPEN_SIZE);
-       memcpy(&bgpo, dat, BGP_OPEN_SIZE);
-
-       printf("\n\t  Version %d, ", bgpo.bgpo_version);
-       printf("my AS %u, ", ntohs(bgpo.bgpo_myas));
-       printf("Holdtime %us, ", ntohs(bgpo.bgpo_holdtime));
-       printf("ID %s", getname((u_char *)&bgpo.bgpo_id));
-       printf("\n\t  Optional parameters, length: %u", bgpo.bgpo_optlen);
-
-        /* some little sanity checking */
-        if (length < bgpo.bgpo_optlen+BGP_OPEN_SIZE) 
-            return;
-
-       /* ugly! */
-       opt = &((const struct bgp_open *)dat)->bgpo_optlen;
-       opt++;
-
-       i = 0;
-       while (i < bgpo.bgpo_optlen) {
-               TCHECK2(opt[i], BGP_OPT_SIZE);
-               memcpy(&bgpopt, &opt[i], BGP_OPT_SIZE);
-               if (i + 2 + bgpopt.bgpopt_len > bgpo.bgpo_optlen) {
-                        printf("\n\t     Option %d, length: %u", bgpopt.bgpopt_type, bgpopt.bgpopt_len);
-                       break;
-               }
-
-               printf("\n\t    Option %s (%u), length: %u",
-                       tok2strbuf(bgp_opt_values,"Unknown",
-                                 bgpopt.bgpopt_type,
-                                 tokbuf, sizeof(tokbuf)),
-                       bgpopt.bgpopt_type,
-                       bgpopt.bgpopt_len);
-
-                /* now lets decode the options we know*/
-                switch(bgpopt.bgpopt_type) {
-                case BGP_OPT_CAP:
-                    cap_type=opt[i+BGP_OPT_SIZE];
-                    cap_len=opt[i+BGP_OPT_SIZE+1];
-                    tcap_len=cap_len;
-                    printf("\n\t      %s (%u), length: %u",
-                           tok2strbuf(bgp_capcode_values, "Unknown",
-                                     cap_type, tokbuf, sizeof(tokbuf)),
-                           cap_type,
-                           cap_len);
-                    switch(cap_type) {
-                    case BGP_CAPCODE_MP:
-                        printf("\n\t\tAFI %s (%u), SAFI %s (%u)",
-                               tok2strbuf(af_values, "Unknown",
-                                         EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+2),
-                                         tokbuf, sizeof(tokbuf)),
-                               EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+2),
-                               tok2strbuf(bgp_safi_values, "Unknown",
-                                         opt[i+BGP_OPT_SIZE+5],
-                                         tokbuf, sizeof(tokbuf)),
-                               opt[i+BGP_OPT_SIZE+5]);
-                        break;
-                    case BGP_CAPCODE_RESTART:
-                        printf("\n\t\tRestart Flags: [%s], Restart Time %us",
-                               ((opt[i+BGP_OPT_SIZE+2])&0x80) ? "R" : "none",
-                               EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+2)&0xfff);
-                        tcap_len-=2;
-                        cap_offset=4;
-                        while(tcap_len>=4) {
-                            printf("\n\t\t  AFI %s (%u), SAFI %s (%u), Forwarding state preserved: %s",
-                                   tok2strbuf(af_values,"Unknown",
-                                             EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+cap_offset),
-                                             tokbuf, sizeof(tokbuf)),
-                                   EXTRACT_16BITS(opt+i+BGP_OPT_SIZE+cap_offset),
-                                   tok2strbuf(bgp_safi_values,"Unknown",
-                                             opt[i+BGP_OPT_SIZE+cap_offset+2],
-                                             tokbuf2, sizeof(tokbuf2)),
-                                   opt[i+BGP_OPT_SIZE+cap_offset+2],
-                                   ((opt[i+BGP_OPT_SIZE+cap_offset+3])&0x80) ? "yes" : "no" );
-                            tcap_len-=4;
-                            cap_offset+=4;
-                        }
-                        break;
-                    case BGP_CAPCODE_RR:
-                    case BGP_CAPCODE_RR_CISCO:
-                        break;
-                    default:
-                        TCHECK2(opt[i+BGP_OPT_SIZE+2],cap_len);
-                        printf("\n\t\tno decoder for Capability %u",
-                               cap_type);
-                        if (vflag <= 1)
-                            print_unknown_data(&opt[i+BGP_OPT_SIZE+2],"\n\t\t",cap_len);
-                        break;
-                    }
-                    if (vflag > 1) {
-                        TCHECK2(opt[i+BGP_OPT_SIZE+2],cap_len);
-                        print_unknown_data(&opt[i+BGP_OPT_SIZE+2],"\n\t\t",cap_len);
-                    }
+    /* allocate space for the largest possible string */
+    char astostr[AS_STR_SIZE];
+    u_int cap_type, cap_len, tcap_len, cap_offset;
+    u_int i = 0;
+
+    while (i < caps_len) {
+        ND_TCHECK_LEN(opt + i, BGP_CAP_HEADER_SIZE);
+        cap_type=GET_U_1(opt + i);
+        cap_len=GET_U_1(opt + i + 1);
+        ND_PRINT("\n\t      %s (%u), length: %u",
+                  tok2str(bgp_capcode_values, "Unknown", cap_type),
+                  cap_type,
+                  cap_len);
+        ND_TCHECK_LEN(opt + 2 + i, cap_len);
+        switch (cap_type) {
+        case BGP_CAPCODE_MP:
+            /* AFI (16 bits), Reserved (8 bits), SAFI (8 bits) */
+            if (cap_len < 4) {
+                ND_PRINT(" (too short, < 4)");
+                return;
+            }
+            ND_PRINT("\n\t\tAFI %s (%u), SAFI %s (%u)",
+               tok2str(af_values, "Unknown", GET_BE_U_2(opt + i + 2)),
+               GET_BE_U_2(opt + i + 2),
+               tok2str(bgp_safi_values, "Unknown", GET_U_1(opt + i + 5)),
+               GET_U_1(opt + i + 5));
+            break;
+        case BGP_CAPCODE_ML:
+            cap_offset = 2;
+            tcap_len = cap_len;
+            while (tcap_len >= 4) {
+                ND_PRINT( "\n\t\tAFI %s (%u), SAFI %s (%u), Count: %u",
+                       tok2str(af_values, "Unknown",
+                                  GET_BE_U_2(opt + i + cap_offset)),
+                       GET_BE_U_2(opt + i + cap_offset),
+                       tok2str(bgp_safi_values, "Unknown",
+                                  GET_U_1(opt + i + cap_offset + 2)),
+                       GET_U_1(opt + i + cap_offset + 2),
+                       GET_U_1(opt + i + cap_offset + 3));
+                tcap_len -= 4;
+                cap_offset += 4;
+            }
+            break;
+        case BGP_CAPCODE_RESTART:
+            /* Restart Flags (4 bits), Restart Time in seconds (12 bits) */
+            if (cap_len < 2) {
+                ND_PRINT(" (too short, < 2)");
+                return;
+            }
+            tcap_len=cap_len;
+            ND_PRINT("\n\t\tRestart Flags: [%s], Restart Time %us",
+                      ((GET_U_1(opt + i + 2))&0x80) ? "R" : "none",
+                      GET_BE_U_2(opt + i + 2)&0xfff);
+            tcap_len-=2;
+            cap_offset=4;
+            while(tcap_len>=4) {
+                ND_PRINT("\n\t\t  AFI %s (%u), SAFI %s (%u), Forwarding state preserved: %s",
+                          tok2str(af_values,"Unknown",
+                                  GET_BE_U_2(opt + i + cap_offset)),
+                          GET_BE_U_2(opt + i + cap_offset),
+                          tok2str(bgp_safi_values,"Unknown",
+                                  GET_U_1(opt + i + cap_offset + 2)),
+                          GET_U_1(opt + (i + cap_offset + 2)),
+                          ((GET_U_1(opt + (i + cap_offset + 3)))&0x80) ? "yes" : "no" );
+                tcap_len -= 4;
+                cap_offset += 4;
+            }
+            break;
+        case BGP_CAPCODE_RR:
+        case BGP_CAPCODE_LLGR:
+        case BGP_CAPCODE_RR_CISCO:
+        case BGP_CAPCODE_EXT_MSG:
+        case BGP_CAPCODE_ENH_RR:
+            break;
+        case BGP_CAPCODE_AS_NEW:
+            /*
+             * Extract the 4 byte AS number encoded.
+             */
+            if (cap_len < 4) {
+                ND_PRINT(" (too short, < 4)");
+                return;
+            }
+            ND_PRINT("\n\t\t 4 Byte AS %s",
+                      as_printf(ndo, astostr, sizeof(astostr),
+                      GET_BE_U_4(opt + i + 2)));
+            break;
+        case BGP_CAPCODE_ADD_PATH:
+            if (cap_len == 0) {
+                ND_PRINT(" (bogus)"); /* length */
+                break;
+            }
+            tcap_len=cap_len;
+            cap_offset=2;
+            while (tcap_len != 0) {
+                if (tcap_len < 4) {
+                    nd_print_invalid(ndo);

                     break;
                     break;

-                case BGP_OPT_AUTH:
-                default:
-                       printf("\n\t      no decoder for option %u",
-                           bgpopt.bgpopt_type);
-                       break;

                 }
                 }

+                ND_PRINT("\n\t\tAFI %s (%u), SAFI %s (%u), Send/Receive: %s",
+                          tok2str(af_values,"Unknown",GET_BE_U_2(opt + i + cap_offset)),
+                          GET_BE_U_2(opt + i + cap_offset),
+                          tok2str(bgp_safi_values,"Unknown",GET_U_1(opt + i + cap_offset + 2)),
+                          GET_U_1(opt + (i + cap_offset + 2)),
+                          tok2str(bgp_add_path_recvsend,"Bogus (0x%02x)",GET_U_1(opt + i + cap_offset + 3))
+                );
+                tcap_len -= 4;
+                cap_offset += 4;
+            }
+            break;
+        default:
+            ND_PRINT("\n\t\tno decoder for Capability %u",
+                      cap_type);
+            if (ndo->ndo_vflag <= 1)
+                print_unknown_data(ndo, opt + i + 2, "\n\t\t",
+                                   cap_len);
+            break;
+        }
+        if (ndo->ndo_vflag > 1 && cap_len != 0) {
+            print_unknown_data(ndo, opt + i + 2, "\n\t\t", cap_len);
+        }
+        i += BGP_CAP_HEADER_SIZE + cap_len;
+    }
+    return;

 
 

-               i += BGP_OPT_SIZE + bgpopt.bgpopt_len;
-       }
-       return;

 trunc:
 trunc:

-       printf("[|BGP]");
+    nd_print_trunc(ndo);

 }
 
 static void
 }
 
 static void

-bgp_update_print(const u_char *dat, int length)
+bgp_open_print(netdissect_options *ndo,
+               const u_char *dat, u_int length)

 {
 {

-       struct bgp bgp;
-       struct bgp_attr bgpa;
-       const u_char *p;
-       int len;
-       int i;
-       char tokbuf[TOKBUFSIZE];
-
-       TCHECK2(dat[0], BGP_SIZE);
-       memcpy(&bgp, dat, BGP_SIZE);
-       p = dat + BGP_SIZE;     /*XXX*/
-
-       /* Unfeasible routes */
-       len = EXTRACT_16BITS(p);
-       if (len) {
-               /*
-                * Without keeping state from the original NLRI message,
-                * it's not possible to tell if this a v4 or v6 route,
-                * so only try to decode it if we're not v6 enabled.
-                */
-#ifdef INET6
-               printf("\n\t  Withdrawn routes: %d bytes", len);
-#else
-               char buf[MAXHOSTNAMELEN + 100];
-               int wpfx;
-
-               TCHECK2(p[2], len);
-               i = 2;
-
-               printf("\n\t  Withdrawn routes:");
-
-               while(i < 2 + len) {
-                       wpfx = decode_prefix4(&p[i], buf, sizeof(buf));
-                       if (wpfx == -1) {
-                               printf("\n\t    (illegal prefix length)");
-                               break;
-                       } else if (wpfx == -2)
-                               goto trunc;
-                       else {
-                               i += wpfx;
-                               printf("\n\t    %s", buf);
-                       }
-               }
-#endif
-       }
-       p += 2 + len;
+    /* allocate space for the largest possible string */
+    char astostr[AS_STR_SIZE];
+    const struct bgp_open *bgp_open_header;
+    u_int optslen;
+    uint8_t opsttype;
+    const struct bgp_opt *bgpopt;
+    const u_char *opt;
+    u_int i;
+    uint8_t extended_opt_params = 0;
+    u_int open_size = BGP_OPEN_SIZE;
+    u_int opt_size = BGP_OPT_SIZE;
+
+    ND_TCHECK_LEN(dat, BGP_OPEN_SIZE);
+    if (length < BGP_OPEN_SIZE)
+        goto trunc;
+
+    bgp_open_header = (const struct bgp_open *)dat;
+
+    ND_PRINT("\n\t  Version %u, ",
+        GET_U_1(bgp_open_header->bgpo_version));
+    ND_PRINT("my AS %s, ",
+        as_printf(ndo, astostr, sizeof(astostr), GET_BE_U_2(bgp_open_header->bgpo_myas)));
+    ND_PRINT("Holdtime %us, ",
+        GET_BE_U_2(bgp_open_header->bgpo_holdtime));
+    ND_PRINT("ID %s", GET_IPADDR_STRING(bgp_open_header->bgpo_id));
+    optslen = GET_U_1(bgp_open_header->bgpo_optlen);
+    opsttype = GET_U_1(bgp_open_header->bgpo_opttype);
+    if (opsttype == BGP_OPEN_NON_EXT_OPT_TYPE_EXTENDED_LENGTH) {
+        optslen = GET_BE_U_2(bgp_open_header->bgpo_optlen_extended);
+        extended_opt_params = 1;
+        open_size += 3;
+        opt_size += 1;
+    }
+    ND_PRINT("\n\t  Optional parameters%s, length: %u",
+             extended_opt_params ? " (Extended)" : "", optslen);
+
+    opt = dat + open_size;
+    length -= open_size;
+
+    i = 0;
+    while (i < optslen) {
+        uint8_t opt_type;
+        uint16_t opt_len;
+
+        ND_TCHECK_LEN(opt + i, opt_size);
+        if (length < opt_size + i)
+            goto trunc;
+        bgpopt = (const struct bgp_opt *)(opt + i);
+        opt_type = GET_U_1(bgpopt->bgpopt_type);
+        opt_len = extended_opt_params ? GET_BE_U_2(bgpopt->bgpopt_len)
+                                      : GET_U_1(bgpopt->bgpopt_len);
+        if (opt_size + i + opt_len > optslen) {
+            ND_PRINT("\n\t     Option %u, length: %u, goes past the end of the options",
+                      opt_type, opt_len);
+            break;
+        }

 
 

-       TCHECK2(p[0], 2);
-       len = EXTRACT_16BITS(p);
+        ND_PRINT("\n\t    Option %s (%u), length: %u",
+                  tok2str(bgp_opt_values,"Unknown",opt_type),
+                  opt_type,
+                  opt_len);

 
 

-        if (len == 0 && length == BGP_UPDATE_MINSIZE) {
-            printf("\n\t  End-of-Rib Marker (empty NLRI)");
-            return;
-        }
+        /* now let's decode the options we know*/
+        switch(opt_type) {

 
 

-       if (len) {
-               /* do something more useful!*/
-               i = 2;
-               while (i < 2 + len) {
-                       int alen, aoff;
-
-                       TCHECK2(p[i], sizeof(bgpa));
-                       memcpy(&bgpa, &p[i], sizeof(bgpa));
-                       alen = bgp_attr_len(&bgpa);
-                       aoff = bgp_attr_off(&bgpa);
-
-                      printf("\n\t  %s (%u), length: %u",
-                              tok2strbuf(bgp_attr_values, "Unknown Attribute",
-                                        bgpa.bgpa_type,
-                                        tokbuf, sizeof(tokbuf)),
-                              bgpa.bgpa_type,
-                              alen);
-
-                       if (bgpa.bgpa_flags) {
-                               printf(", Flags [%s%s%s%s",
-                                       bgpa.bgpa_flags & 0x80 ? "O" : "",
-                                       bgpa.bgpa_flags & 0x40 ? "T" : "",
-                                       bgpa.bgpa_flags & 0x20 ? "P" : "",
-                                       bgpa.bgpa_flags & 0x10 ? "E" : "");
-                               if (bgpa.bgpa_flags & 0xf)
-                                       printf("+%x", bgpa.bgpa_flags & 0xf);
-                               printf("]: ");
-                       }
-                       if (!bgp_attr_print(&bgpa, &p[i + aoff], alen))
-                               goto trunc;
-                       i += aoff + alen;
-               }
-       } 
-       p += 2 + len;
-
-       if (dat + length > p) {
-               printf("\n\t  Updated routes:");
-               while (dat + length > p) {
-                       char buf[MAXHOSTNAMELEN + 100];
-                       i = decode_prefix4(p, buf, sizeof(buf));
-                       if (i == -1) {
-                               printf("\n\t    (illegal prefix length)");
-                               break;
-                       } else if (i == -2)
-                               goto trunc;
-                       else {
-                               printf("\n\t    %s", buf);
-                               p += i;
-                       }
-               }
-       }
-       return;
+        case BGP_OPT_CAP:
+            bgp_capabilities_print(ndo, opt + opt_size + i,
+                                   opt_len);
+            break;
+
+        case BGP_OPT_AUTH:
+        default:
+               ND_PRINT("\n\t      no decoder for option %u",
+               opt_type);
+               break;
+        }
+        i += opt_size + opt_len;
+    }
+    return;

 trunc:
 trunc:

-       printf("[|BGP]");
+    nd_print_trunc(ndo);

 }
 
 static void
 }
 
 static void

-bgp_notification_print(const u_char *dat, int length)
+bgp_update_print(netdissect_options *ndo,
+                 const u_char *dat, u_int length)

 {
 {

-       struct bgp_notification bgpn;
-       const u_char *tptr;
-       char tokbuf[TOKBUFSIZE];
-       char tokbuf2[TOKBUFSIZE];
-
-       TCHECK2(dat[0], BGP_NOTIFICATION_SIZE);
-       memcpy(&bgpn, dat, BGP_NOTIFICATION_SIZE);
-
-        /* some little sanity checking */
-        if (length<BGP_NOTIFICATION_SIZE)
-            return;
-
-       printf(", %s (%u)",
-              tok2strbuf(bgp_notify_major_values, "Unknown Error",
-                         bgpn.bgpn_major, tokbuf, sizeof(tokbuf)),
-              bgpn.bgpn_major);
-
-        switch (bgpn.bgpn_major) {
-
-        case BGP_NOTIFY_MAJOR_MSG:
-            printf(", subcode %s (%u)",
-                  tok2strbuf(bgp_notify_minor_msg_values, "Unknown",
-                             bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
-                  bgpn.bgpn_minor);
-            break;
-        case BGP_NOTIFY_MAJOR_OPEN:
-            printf(", subcode %s (%u)",
-                  tok2strbuf(bgp_notify_minor_open_values, "Unknown",
-                             bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
-                  bgpn.bgpn_minor);
-            break;
-        case BGP_NOTIFY_MAJOR_UPDATE:
-            printf(", subcode %s (%u)",
-                  tok2strbuf(bgp_notify_minor_update_values, "Unknown",
-                             bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
-                  bgpn.bgpn_minor);
-            break;
-        case BGP_NOTIFY_MAJOR_CAP:
-            printf(" subcode %s (%u)",
-                  tok2strbuf(bgp_notify_minor_cap_values, "Unknown",
-                             bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
-                  bgpn.bgpn_minor);
-        case BGP_NOTIFY_MAJOR_CEASE:
-            printf(", subcode %s (%u)",
-                  tok2strbuf(bgp_notify_minor_cease_values, "Unknown",
-                             bgpn.bgpn_minor, tokbuf, sizeof(tokbuf)),
-                  bgpn.bgpn_minor);
-
-           /* draft-ietf-idr-cease-subcode-02 mentions optionally 7 bytes
-             * for the maxprefix subtype, which may contain AFI, SAFI and MAXPREFIXES
-             */
-           if(bgpn.bgpn_minor == BGP_NOTIFY_MINOR_CEASE_MAXPRFX && length >= BGP_NOTIFICATION_SIZE + 7) {
-               tptr = dat + BGP_NOTIFICATION_SIZE;
-               TCHECK2(*tptr, 7);
-               printf(", AFI %s (%u), SAFI %s (%u), Max Prefixes: %u",
-                      tok2strbuf(af_values, "Unknown",
-                                 EXTRACT_16BITS(tptr), tokbuf, sizeof(tokbuf)),
-                      EXTRACT_16BITS(tptr),
-                      tok2strbuf(bgp_safi_values, "Unknown", *(tptr+2),
-                                 tokbuf2, sizeof(tokbuf)),
-                      *(tptr+2),
-                      EXTRACT_32BITS(tptr+3));
-           }
-            break;
-        default:
-            break;
+    const u_char *p;
+    u_int withdrawn_routes_len;
+    char buf[MAXHOSTNAMELEN + 100];
+    int wpfx;
+    u_int len;
+    int i;
+    int add_path;
+    u_int path_id = 0;
+
+    ND_TCHECK_LEN(dat, BGP_SIZE);
+    if (length < BGP_SIZE)
+        goto trunc;
+    p = dat + BGP_SIZE;
+    length -= BGP_SIZE;
+
+    /* Unfeasible routes */
+    ND_TCHECK_2(p);
+    if (length < 2)
+        goto trunc;
+    withdrawn_routes_len = GET_BE_U_2(p);
+    p += 2;
+    length -= 2;
+    if (withdrawn_routes_len > 1) {
+        /*
+         * Without keeping state from the original NLRI message,
+         * it's not possible to tell if this a v4 or v6 route,
+         * so only try to decode it if we're not v6 enabled.
+         */
+        ND_TCHECK_LEN(p, withdrawn_routes_len);
+        if (length < withdrawn_routes_len)
+            goto trunc;
+        ND_PRINT("\n\t  Withdrawn routes:");
+        add_path = check_add_path(ndo, p, withdrawn_routes_len, 32);
+        while (withdrawn_routes_len != 0) {
+            if (add_path) {
+                if (withdrawn_routes_len < 4) {
+                    p += withdrawn_routes_len;
+                    length -= withdrawn_routes_len;
+                    break;
+                }
+                path_id = GET_BE_U_4(p);
+                p += 4;
+                length -= 4;
+                withdrawn_routes_len -= 4;
+            }
+            wpfx = decode_prefix4(ndo, p, withdrawn_routes_len, buf, sizeof(buf));
+            if (wpfx == -1) {
+                ND_PRINT("\n\t    (illegal prefix length)");
+                break;
+            } else if (wpfx == -2)
+                goto trunc; /* bytes left, but not enough */
+            else {
+                ND_PRINT("\n\t    %s", buf);
+                if (add_path) {
+                    ND_PRINT("   Path Id: %u", path_id);
+                }
+                p += wpfx;
+                length -= wpfx;
+                withdrawn_routes_len -= wpfx;
+            }
+        }
+    } else {
+        ND_TCHECK_LEN(p, withdrawn_routes_len);
+        if (length < withdrawn_routes_len)
+            goto trunc;
+        p += withdrawn_routes_len;
+        length -= withdrawn_routes_len;
+    }
+
+    ND_TCHECK_2(p);
+    if (length < 2)
+        goto trunc;
+    len = GET_BE_U_2(p);
+    p += 2;
+    length -= 2;
+
+    if (withdrawn_routes_len == 0 && len == 0 && length == 0) {
+        /* No withdrawn routes, no path attributes, no NLRI */
+        ND_PRINT("\n\t  End-of-Rib Marker (empty NLRI)");
+        return;
+    }
+
+    if (len) {
+        /* Make sure the path attributes don't go past the end of the packet */
+        if (length < len)
+            goto trunc;
+        /* do something more useful!*/
+        while (len) {
+            uint8_t aflags, atype, alenlen;
+            uint16_t alen;
+
+            ND_TCHECK_2(p);
+            if (length < 2)
+                goto trunc;
+            if (len < 2) {
+                ND_PRINT("\n\t  [path attrs too short]");
+                p += len;
+                length -= len;
+                break;
+            }
+            aflags = GET_U_1(p);
+            atype = GET_U_1(p + 1);
+            p += 2;
+            len -= 2;
+            length -= 2;
+            alenlen = bgp_attr_lenlen(aflags, p);
+            ND_TCHECK_LEN(p, alenlen);
+            if (length < alenlen)
+                goto trunc;
+            if (len < alenlen) {
+                ND_PRINT("\n\t  [path attrs too short]");
+                p += len;
+                length -= len;
+                break;
+            }
+            alen = bgp_attr_len(aflags, p);
+            p += alenlen;
+            len -= alenlen;
+            length -= alenlen;
+
+            ND_PRINT("\n\t  %s (%u), length: %u",
+                      tok2str(bgp_attr_values, "Unknown Attribute", atype),
+                      atype,
+                      alen);
+
+            if (aflags) {
+                ND_PRINT(", Flags [%s%s%s%s",
+                          aflags & 0x80 ? "O" : "",
+                          aflags & 0x40 ? "T" : "",
+                          aflags & 0x20 ? "P" : "",
+                          aflags & 0x10 ? "E" : "");
+                if (aflags & 0xf)
+                    ND_PRINT("+%x", aflags & 0xf);
+                ND_PRINT("]: ");
+            }
+            if (len < alen) {
+                ND_PRINT(" [path attrs too short]");
+                p += len;
+                length -= len;
+                break;
+            }
+            if (length < alen)
+                goto trunc;
+            if (!bgp_attr_print(ndo, atype, p, alen, 0))
+                goto trunc;
+            p += alen;
+            len -= alen;
+            length -= alen;

         }
         }

+    }

 
 

-       return;
+    if (length) {
+        add_path = check_add_path(ndo, p, length, 32);
+        ND_PRINT("\n\t  Updated routes:");
+        while (length != 0) {
+            if (add_path) {
+                ND_TCHECK_4(p);
+                if (length < 4)
+                    goto trunc;
+                path_id = GET_BE_U_4(p);
+                p += 4;
+                length -= 4;
+            }
+            i = decode_prefix4(ndo, p, length, buf, sizeof(buf));
+            if (i == -1) {
+                ND_PRINT("\n\t    (illegal prefix length)");
+                break;
+            } else if (i == -2)
+                goto trunc; /* bytes left, but not enough */
+            else {
+                ND_PRINT("\n\t    %s", buf);
+                if (add_path) {
+                    ND_PRINT("   Path Id: %u", path_id);
+                }
+                p += i;
+                length -= i;
+            }
+        }
+    }
+    return;

 trunc:
 trunc:

-       printf("[|BGP]");
+    nd_print_trunc(ndo);

 }
 
 static void
 }
 
 static void

-bgp_route_refresh_print(const u_char *pptr, int len) {
-
-        const struct bgp_route_refresh *bgp_route_refresh_header;
-       char tokbuf[TOKBUFSIZE];
-       char tokbuf2[TOKBUFSIZE];
-
-       TCHECK2(pptr[0], BGP_ROUTE_REFRESH_SIZE);
-
-        /* some little sanity checking */
-        if (len<BGP_ROUTE_REFRESH_SIZE)
-            return;
-
-        bgp_route_refresh_header = (const struct bgp_route_refresh *)pptr;
-
-        printf("\n\t  AFI %s (%u), SAFI %s (%u)",
-               tok2strbuf(af_values,"Unknown",
-                         /* this stinks but the compiler pads the structure
-                          * weird */
-                         EXTRACT_16BITS(&bgp_route_refresh_header->afi),
-                         tokbuf, sizeof(tokbuf)), 
-               EXTRACT_16BITS(&bgp_route_refresh_header->afi),
-               tok2strbuf(bgp_safi_values,"Unknown",
-                         bgp_route_refresh_header->safi,
-                         tokbuf2, sizeof(tokbuf2)),
-               bgp_route_refresh_header->safi);
-
-        if (vflag > 1) {
-            TCHECK2(*pptr, len);
-            print_unknown_data(pptr,"\n\t  ", len);
+bgp_notification_print(netdissect_options *ndo,
+                       const u_char *dat, u_int length)
+{
+    const struct bgp_notification *bgp_notification_header;
+    const u_char *tptr;
+    uint8_t bgpn_major, bgpn_minor;
+
+    ND_TCHECK_LEN(dat, BGP_NOTIFICATION_SIZE);
+    if (length<BGP_NOTIFICATION_SIZE)
+        return;
+
+    bgp_notification_header = (const struct bgp_notification *)dat;
+    bgpn_major = GET_U_1(bgp_notification_header->bgpn_major);
+    bgpn_minor = GET_U_1(bgp_notification_header->bgpn_minor);
+
+    ND_PRINT(", %s (%u)",
+              tok2str(bgp_notify_major_values, "Unknown Error",
+                      bgpn_major),
+              bgpn_major);
+
+    switch (bgpn_major) {
+
+    case BGP_NOTIFY_MAJOR_MSG:
+        ND_PRINT(", subcode %s (%u)",
+                  tok2str(bgp_notify_minor_msg_values, "Unknown",
+                          bgpn_minor),
+                  bgpn_minor);
+        break;
+    case BGP_NOTIFY_MAJOR_OPEN:
+        ND_PRINT(", subcode %s (%u)",
+                  tok2str(bgp_notify_minor_open_values, "Unknown",
+                          bgpn_minor),
+                  bgpn_minor);
+        break;
+    case BGP_NOTIFY_MAJOR_UPDATE:
+        ND_PRINT(", subcode %s (%u)",
+                  tok2str(bgp_notify_minor_update_values, "Unknown",
+                          bgpn_minor),
+                  bgpn_minor);
+        break;
+    case BGP_NOTIFY_MAJOR_FSM:
+        ND_PRINT(" subcode %s (%u)",
+                  tok2str(bgp_notify_minor_fsm_values, "Unknown",
+                          bgpn_minor),
+                  bgpn_minor);
+        break;
+    case BGP_NOTIFY_MAJOR_CAP:
+        ND_PRINT(" subcode %s (%u)",
+                  tok2str(bgp_notify_minor_cap_values, "Unknown",
+                          bgpn_minor),
+                  bgpn_minor);
+        break;
+    case BGP_NOTIFY_MAJOR_CEASE:
+        ND_PRINT(", subcode %s (%u)",
+                  tok2str(bgp_notify_minor_cease_values, "Unknown",
+                          bgpn_minor),
+                  bgpn_minor);
+
+        /* RFC 4486 mentions optionally 7 bytes
+         * for the maxprefix subtype, which may contain AFI, SAFI and MAXPREFIXES
+         */
+        if(bgpn_minor == BGP_NOTIFY_MINOR_CEASE_MAXPRFX && length >= BGP_NOTIFICATION_SIZE + 7) {
+            tptr = dat + BGP_NOTIFICATION_SIZE;
+            ND_PRINT(", AFI %s (%u), SAFI %s (%u), Max Prefixes: %u",
+                      tok2str(af_values, "Unknown", GET_BE_U_2(tptr)),
+                      GET_BE_U_2(tptr),
+                      tok2str(bgp_safi_values, "Unknown", GET_U_1((tptr + 2))),
+                      GET_U_1((tptr + 2)),
+                      GET_BE_U_4(tptr + 3));
+        }
+        /*
+         * RFC 9003 describes a method to send a communication
+         * intended for human consumption regarding the Administrative Shutdown
+         */
+        if ((bgpn_minor == BGP_NOTIFY_MINOR_CEASE_SHUT ||
+             bgpn_minor == BGP_NOTIFY_MINOR_CEASE_RESET) &&
+             length >= BGP_NOTIFICATION_SIZE + 1) {
+            tptr = dat + BGP_NOTIFICATION_SIZE;
+            uint8_t shutdown_comm_length = GET_U_1(tptr);
+            uint8_t remainder_offset = 0;
+            /* garbage, hexdump it all */
+            if (shutdown_comm_length > length - (BGP_NOTIFICATION_SIZE + 1)) {
+                ND_PRINT(", invalid Shutdown Communication length");
+            }
+            else if (shutdown_comm_length == 0) {
+                ND_PRINT(", empty Shutdown Communication");
+                remainder_offset += 1;
+            }
+            /* a proper shutdown communication */
+            else {
+                ND_PRINT(", Shutdown Communication (length: %u): \"", shutdown_comm_length);
+                nd_printjn(ndo, tptr+1, shutdown_comm_length);
+                ND_PRINT("\"");
+                remainder_offset += shutdown_comm_length + 1;
+            }
+            /* if there is trailing data, hexdump it */
+            if(length - (remainder_offset + BGP_NOTIFICATION_SIZE) > 0) {
+                ND_PRINT(", Data: (length: %u)", length - (remainder_offset + BGP_NOTIFICATION_SIZE));
+                hex_print(ndo, "\n\t\t", tptr + remainder_offset, length - (remainder_offset + BGP_NOTIFICATION_SIZE));
+            }

         }
         }

-        
+        break;
+    default:
+        break;
+    }
+
+    return;
+trunc:
+    nd_print_trunc(ndo);
+}
+
+static void
+bgp_route_refresh_print(netdissect_options *ndo,
+                        const u_char *pptr, u_int len)
+{
+    const struct bgp_route_refresh *bgp_route_refresh_header;
+
+    ND_TCHECK_LEN(pptr, BGP_ROUTE_REFRESH_SIZE);
+
+    /* some little sanity checking */
+    if (len<BGP_ROUTE_REFRESH_SIZE)

         return;
         return;

+
+    bgp_route_refresh_header = (const struct bgp_route_refresh *)pptr;
+
+    ND_PRINT("\n\t  AFI %s (%u), SAFI %s (%u), Subtype %s (%u)",
+             tok2str(af_values, "Unknown",
+                     GET_BE_U_2(bgp_route_refresh_header->afi)),
+             GET_BE_U_2(bgp_route_refresh_header->afi),
+             tok2str(bgp_safi_values, "Unknown",
+                     GET_U_1(bgp_route_refresh_header->safi)),
+             GET_U_1(bgp_route_refresh_header->safi),
+             tok2str(bgp_route_refresh_subtype_values, "Unknown",
+                     GET_U_1(bgp_route_refresh_header->subtype)),
+             GET_U_1(bgp_route_refresh_header->subtype));
+
+    if (ndo->ndo_vflag > 1) {
+        ND_TCHECK_LEN(pptr, len);
+        print_unknown_data(ndo, pptr, "\n\t  ", len);
+    }
+
+    return;

 trunc:
 trunc:

-       printf("[|BGP]");
+    nd_print_trunc(ndo);

 }
 
 static int
 }
 
 static int

-bgp_header_print(const u_char *dat, int length)
+bgp_pdu_print(netdissect_options *ndo,
+              const u_char *dat, u_int length)

 {
 {

-       struct bgp bgp;
-       char tokbuf[TOKBUFSIZE];
-
-       TCHECK2(dat[0], BGP_SIZE);
-       memcpy(&bgp, dat, BGP_SIZE);
-       printf("\n\t%s Message (%u), length: %u",
-               tok2strbuf(bgp_msg_values, "Unknown", bgp.bgp_type,
-                         tokbuf, sizeof(tokbuf)),
-               bgp.bgp_type,
-               length);
-
-       switch (bgp.bgp_type) {
-       case BGP_OPEN:
-               bgp_open_print(dat, length);
-               break;
-       case BGP_UPDATE:
-               bgp_update_print(dat, length);
-               break;
-       case BGP_NOTIFICATION:
-               bgp_notification_print(dat, length);
-               break;
-        case BGP_KEEPALIVE:
-                break;
-        case BGP_ROUTE_REFRESH:
-                bgp_route_refresh_print(dat, length);
-                break;
-        default:
-                /* we have no decoder for the BGP message */
-                TCHECK2(*dat, length);
-                printf("\n\t  no Message %u decoder",bgp.bgp_type);
-                print_unknown_data(dat,"\n\t  ",length);
-                break;
-       }
-       return 1;
+    const struct bgp *bgp_header;
+    uint8_t bgp_type;
+
+    ND_TCHECK_LEN(dat, BGP_SIZE);
+    bgp_header = (const struct bgp *)dat;
+    bgp_type = GET_U_1(bgp_header->bgp_type);
+
+    ND_PRINT("\n\t%s Message (%u), length: %u",
+              tok2str(bgp_msg_values, "Unknown", bgp_type),
+              bgp_type,
+              length);
+
+    switch (bgp_type) {
+    case BGP_OPEN:
+        bgp_open_print(ndo, dat, length);
+        break;
+    case BGP_UPDATE:
+        bgp_update_print(ndo, dat, length);
+        break;
+    case BGP_NOTIFICATION:
+        bgp_notification_print(ndo, dat, length);
+        break;
+    case BGP_KEEPALIVE:
+        break;
+    case BGP_ROUTE_REFRESH:
+        bgp_route_refresh_print(ndo, dat, length);
+        break;
+    default:
+        /* we have no decoder for the BGP message */
+        ND_TCHECK_LEN(dat, length);
+        ND_PRINT("\n\t  no Message %u decoder", bgp_type);
+        print_unknown_data(ndo, dat, "\n\t  ", length);
+        break;
+    }
+    return 1;

 trunc:
 trunc:

-       printf("[|BGP]");
-       return 0;
+    nd_print_trunc(ndo);
+    return 0;

 }
 
 void
 }
 
 void

-bgp_print(const u_char *dat, int length)
+bgp_print(netdissect_options *ndo,
+          const u_char *dat, u_int length _U_)

 {
 {

-       const u_char *p;
-       const u_char *ep;
-       const u_char *start;
-       const u_char marker[] = {
-               0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-               0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-       };
-       struct bgp bgp;
-       u_int16_t hlen;
-       char tokbuf[TOKBUFSIZE];
-
-       ep = dat + length;
-       if (snapend < dat + length)
-               ep = snapend;
-
-       printf(": BGP, length: %u",length);
-
-        if (vflag < 1) /* lets be less chatty */
-                return;
+    const u_char *p;
+    const u_char *ep = ndo->ndo_snapend;
+    const u_char *start;
+    const u_char marker[] = {
+        0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+        0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+    };
+    const struct bgp *bgp_header;
+    uint16_t hlen;
+
+    ndo->ndo_protocol = "bgp";
+    ND_PRINT(": BGP");
+
+    if (ndo->ndo_vflag < 1) /* lets be less chatty */
+        return;

 
 

-       p = dat;
-       start = p;
-       while (p < ep) {
-               if (!TTEST2(p[0], 1))
-                       break;
-               if (p[0] != 0xff) {
-                       p++;
-                       continue;
-               }
-
-               if (!TTEST2(p[0], sizeof(marker)))
-                       break;
-               if (memcmp(p, marker, sizeof(marker)) != 0) {
-                       p++;
-                       continue;
-               }
-
-               /* found BGP header */
-               TCHECK2(p[0], BGP_SIZE);        /*XXX*/
-               memcpy(&bgp, p, BGP_SIZE);
-
-               if (start != p)
-                       printf(" [|BGP]");
-
-               hlen = ntohs(bgp.bgp_len);
-               if (hlen < BGP_SIZE) {
-                       printf("\n[|BGP Bogus header length %u < %u]", hlen,
-                           BGP_SIZE);
-                       break;
-               }
-
-               if (TTEST2(p[0], hlen)) {
-                       if (!bgp_header_print(p, hlen))
-                               return;
-                       p += hlen;
-                       start = p;
-               } else {
-                       printf("\n[|BGP %s]",
-                              tok2strbuf(bgp_msg_values,
-                                         "Unknown Message Type",
-                                         bgp.bgp_type,
-                                         tokbuf, sizeof(tokbuf)));
-                       break;
-               }
-       }
+    p = dat;
+    start = p;
+    while (p < ep) {
+        if (!ND_TTEST_1(p))
+            break;
+        if (GET_U_1(p) != 0xff) {
+            p++;
+            continue;
+        }
+
+        if (!ND_TTEST_LEN(p, sizeof(marker)))
+            break;
+        if (memcmp(p, marker, sizeof(marker)) != 0) {
+            p++;
+            continue;
+        }
+
+        /* found BGP header */
+        ND_TCHECK_LEN(p, BGP_SIZE);
+        bgp_header = (const struct bgp *)p;
+
+        if (start != p)
+            nd_print_trunc(ndo);
+
+        hlen = GET_BE_U_2(bgp_header->bgp_len);
+        if (hlen < BGP_SIZE) {
+            ND_PRINT("\nmessage length %u < %u", hlen, BGP_SIZE);
+            nd_print_invalid(ndo);
+            break;
+        }
+
+        if (ND_TTEST_LEN(p, hlen)) {
+            if (!bgp_pdu_print(ndo, p, hlen))
+                return;
+            p += hlen;
+            start = p;
+        } else {
+            ND_PRINT("\n[|BGP %s]",
+                      tok2str(bgp_msg_values,
+                              "Unknown Message Type",
+                              GET_U_1(bgp_header->bgp_type)));
+            break;
+        }
+    }

 
 

-       return;
+    return;

 
 trunc:
 
 trunc:

-       printf(" [|BGP]");
+    nd_print_trunc(ndo);

 }
 }