X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/124d025a425a4184a2e57ce2faa507a438f6d204..6d3b0e4599c5aa922bba42e53b038b51d9024a62:/print-bgp.c

diff --git a/print-bgp.c b/print-bgp.c
index 88ade46d..ba927e4b 100644
--- a/print-bgp.c
+++ b/print-bgp.c
@@ -80,13 +80,15 @@ struct bgp_open {
     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 */
 
 struct bgp_opt {
-    nd_uint8_t bgpopt_type;
-    nd_uint8_t bgpopt_len;
+    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 */
@@ -106,10 +108,22 @@ struct bgp_route_refresh {
     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  res;
+    nd_uint8_t  subtype;
     nd_uint8_t  safi;
 };
 #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)
@@ -126,9 +140,6 @@ struct bgp_route_refresh {
 #define BGPTYPE_COMMUNITIES              8    /* RFC1997 */
 #define BGPTYPE_ORIGINATOR_ID            9    /* RFC4456 */
 #define BGPTYPE_CLUSTER_LIST            10    /* RFC4456 */
-#define BGPTYPE_DPA                     11    /* deprecated, draft-ietf-idr-bgp-dpa */
-#define BGPTYPE_ADVERTISERS             12    /* deprecated RFC1863 */
-#define BGPTYPE_RCID_PATH               13    /* deprecated RFC1863 */
 #define BGPTYPE_MP_REACH_NLRI           14    /* RFC4760 */
 #define BGPTYPE_MP_UNREACH_NLRI         15    /* RFC4760 */
 #define BGPTYPE_EXTD_COMMUNITIES        16    /* RFC4360 */
@@ -159,9 +170,6 @@ static const struct tok bgp_attr_values[] = {
     { 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"},
@@ -216,12 +224,15 @@ static const struct tok bgp_opt_values[] = {
 #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 /* draft-keyur-bgp-enhanced-route-refresh */
+#define BGP_CAPCODE_ENH_RR             70 /* RFC7313 */
+#define BGP_CAPCODE_LLGR               71 /* draft-uttaro-idr-bgp-persistence-05 */
 #define BGP_CAPCODE_RR_CISCO          128
 
 static const struct tok bgp_capcode_values[] = {
@@ -230,12 +241,15 @@ static const struct tok bgp_capcode_values[] = {
     { 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_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}
 };
@@ -259,12 +273,10 @@ static const struct tok bgp_notify_major_values[] = {
     { 0, NULL}
 };
 
-/* draft-ietf-idr-cease-subcode-02 */
+/* RFC 4486 */
 #define BGP_NOTIFY_MINOR_CEASE_MAXPRFX  1
-/* draft-ietf-idr-shutdown-07 */
 #define BGP_NOTIFY_MINOR_CEASE_SHUT     2
 #define BGP_NOTIFY_MINOR_CEASE_RESET    4
-#define BGP_NOTIFY_MINOR_CEASE_ADMIN_SHUTDOWN_LEN   128
 static const struct tok bgp_notify_minor_cease_values[] = {
     { BGP_NOTIFY_MINOR_CEASE_MAXPRFX, "Maximum Number of Prefixes Reached"},
     { BGP_NOTIFY_MINOR_CEASE_SHUT,    "Administrative Shutdown"},
@@ -378,6 +390,8 @@ static const struct tok bgp_aigp_values[] = {
 #define SAFNUM_VPLS                     65
 /* RFC6037 */
 #define SAFNUM_MDT                      66
+/* RFC7432 */
+#define SAFNUM_EVPN                     70
 /* RFC4364 */
 #define SAFNUM_VPNUNICAST               128
 /* RFC6513 */
@@ -397,6 +411,7 @@ static const struct tok bgp_safi_values[] = {
     { 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"},
@@ -426,6 +441,7 @@ static const struct tok bgp_safi_values[] = {
 
 #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 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_RID2   0x8001  /* duplicate - keep for backwards compatibility */
@@ -437,7 +453,7 @@ static const struct tok bgp_safi_values[] = {
 #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) */
 
-/* http://www.cisco.com/en/US/tech/tk436/tk428/technologies_tech_note09186a00801eb09a.shtml  */
+/* 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
@@ -445,6 +461,9 @@ static const struct tok bgp_safi_values[] = {
 #define BGP_EXT_COM_EIGRP_EXT_REMAS_REMID        0x8804
 #define BGP_EXT_COM_EIGRP_EXT_REMPROTO_REMMETRIC 0x8805
 
+/* 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"},
@@ -465,6 +484,7 @@ static const struct tok bgp_extd_comm_subtype_values[] = {
     { 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_L2INFO,      "layer2-info"},
@@ -481,6 +501,46 @@ static const struct tok bgp_extd_comm_subtype_values[] = {
     { 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},
+};
+
 /* OSPF codes for  BGP_EXT_COM_OSPF_RTYPE draft-rosen-vpns-ospf-bgp-mpls  */
 #define BGP_OSPF_RTYPE_RTR      1 /* OSPF Router LSA */
 #define BGP_OSPF_RTYPE_NET      2 /* OSPF Network LSA */
@@ -508,7 +568,7 @@ static const struct tok bgp_add_path_recvsend[] = {
     { 0, NULL },
 };
 
-static char astostr[20];
+#define AS_STR_SIZE sizeof("xxxxx.xxxxx")
 
 /*
  * as_printf
@@ -524,9 +584,9 @@ as_printf(netdissect_options *ndo,
           char *str, size_t size, u_int asnum)
 {
     if (!ndo->ndo_bflag || asnum <= 0xFFFF) {
-        nd_snprintf(str, size, "%u", asnum);
+        snprintf(str, size, "%u", asnum);
     } else {
-        nd_snprintf(str, size, "%u.%u", asnum >> 16, asnum & 0xFFFF);
+        snprintf(str, size, "%u.%u", asnum >> 16, asnum & 0xFFFF);
     }
     return str;
 }
@@ -537,10 +597,9 @@ int
 decode_prefix4(netdissect_options *ndo,
                const u_char *pptr, u_int itemlen, char *buf, size_t buflen)
 {
-    struct in_addr addr;
+    nd_ipv4 addr;
     u_int plen, plenbytes;
 
-    ND_TCHECK_1(pptr);
     ITEMCHECK(1);
     plen = GET_U_1(pptr);
     if (32 < plen)
@@ -549,20 +608,16 @@ decode_prefix4(netdissect_options *ndo,
 
     memset(&addr, 0, sizeof(addr));
     plenbytes = (plen + 7) / 8;
-    ND_TCHECK_LEN(pptr + 1, plenbytes);
     ITEMCHECK(plenbytes);
-    memcpy(&addr, pptr + 1, plenbytes);
+    GET_CPY_BYTES(&addr, pptr + 1, plenbytes);
     if (plen % 8) {
         ((u_char *)&addr)[plenbytes - 1] &= ((0xff00 >> (plen % 8)) & 0xff);
     }
-    nd_snprintf(buf, buflen, "%s/%u", ipaddr_string(ndo, (const u_char *)&addr), plen);
+    snprintf(buf, buflen, "%s/%u", ipaddr_string(ndo, (const u_char *)&addr), plen);
     return 1 + plenbytes;
 
-trunc:
-    return -2;
-
 badtlv:
-    return -3;
+    return -2;
 }
 
 static int
@@ -570,7 +625,7 @@ decode_labeled_prefix4(netdissect_options *ndo,
                        const u_char *pptr, u_int itemlen, char *buf,
                        size_t buflen)
 {
-    struct in_addr addr;
+    nd_ipv4 addr;
     u_int plen, plenbytes;
 
     /* prefix length and label = 4 bytes */
@@ -597,14 +652,13 @@ decode_labeled_prefix4(netdissect_options *ndo,
 
     memset(&addr, 0, sizeof(addr));
     plenbytes = (plen + 7) / 8;
-    ND_TCHECK_LEN(pptr + 4, plenbytes);
     ITEMCHECK(plenbytes);
-    memcpy(&addr, pptr + 4, 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 */
-    nd_snprintf(buf, buflen, "%s/%u, label:%u %s",
+    snprintf(buf, buflen, "%s/%u, label:%u %s",
              ipaddr_string(ndo, (const u_char *)&addr),
              plen,
              GET_BE_U_3(pptr + 1)>>4,
@@ -622,7 +676,7 @@ badtlv:
 /*
  * bgp_vpn_ip_print
  *
- * print an ipv4 or ipv6 address into a buffer dependend on address length.
+ * print an ipv4 or ipv6 address into a buffer dependent on address length.
  */
 static char *
 bgp_vpn_ip_print(netdissect_options *ndo,
@@ -635,20 +689,17 @@ bgp_vpn_ip_print(netdissect_options *ndo,
 
     switch(addr_length) {
     case (sizeof(nd_ipv4) << 3): /* 32 */
-        ND_TCHECK_LEN(pptr, sizeof(nd_ipv4));
-        nd_snprintf(pos, sizeof(addr), "%s", ipaddr_string(ndo, pptr));
+        snprintf(pos, sizeof(addr), "%s", GET_IPADDR_STRING(pptr));
         break;
     case (sizeof(nd_ipv6) << 3): /* 128 */
-        ND_TCHECK_LEN(pptr, sizeof(nd_ipv6));
-        nd_snprintf(pos, sizeof(addr), "%s", ip6addr_string(ndo, pptr));
+        snprintf(pos, sizeof(addr), "%s", GET_IP6ADDR_STRING(pptr));
         break;
     default:
-        nd_snprintf(pos, sizeof(addr), "bogus address length %u", addr_length);
+        snprintf(pos, sizeof(addr), "bogus address length %u", addr_length);
         break;
     }
     pos += strlen(pos);
 
-trunc:
     *(pos) = '\0';
     return (addr);
 }
@@ -681,7 +732,6 @@ bgp_vpn_sg_print(netdissect_options *ndo,
     total_length = 0;
 
     /* Source address length, encoded in bits */
-    ND_TCHECK_1(pptr);
     addr_length = GET_U_1(pptr);
     pptr++;
 
@@ -690,13 +740,12 @@ bgp_vpn_sg_print(netdissect_options *ndo,
     total_length += (addr_length >> 3) + 1;
     offset = (u_int)strlen(buf);
     if (addr_length) {
-        nd_snprintf(buf + offset, buflen - offset, ", Source %s",
+        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 */
-    ND_TCHECK_1(pptr);
     addr_length = GET_U_1(pptr);
     pptr++;
 
@@ -705,7 +754,7 @@ bgp_vpn_sg_print(netdissect_options *ndo,
     total_length += (addr_length >> 3) + 1;
     offset = (u_int)strlen(buf);
     if (addr_length) {
-        nd_snprintf(buf + offset, buflen - offset, ", Group %s",
+        snprintf(buf + offset, buflen - offset, ", Group %s",
              bgp_vpn_ip_print(ndo, pptr, addr_length));
         pptr += (addr_length >> 3);
     }
@@ -720,15 +769,17 @@ bgp_vpn_rd_print(netdissect_options *ndo,
                  const u_char *pptr)
 {
     /* allocate space for the largest possible string */
-    static char rd[sizeof("xxxxxxxxxx:xxxxx (xxx.xxx.xxx.xxx:xxxxx)")];
+    static char rd[sizeof("xxxxx.xxxxx:xxxxx (xxx.xxx.xxx.xxx:xxxxx)")];
     char *pos = rd;
+    /* allocate space for the largest possible string */
+    char astostr[AS_STR_SIZE];
 
     /* ok lets load the RD format */
     switch (GET_BE_U_2(pptr)) {
 
     case 0:
         /* 2-byte-AS:number fmt */
-        nd_snprintf(pos, sizeof(rd) - (pos - rd), "%u:%u (= %u.%u.%u.%u)",
+        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),
@@ -737,7 +788,7 @@ bgp_vpn_rd_print(netdissect_options *ndo,
 
     case 1:
         /* IP-address:AS fmt */
-        nd_snprintf(pos, sizeof(rd) - (pos - rd), "%u.%u.%u.%u:%u",
+        snprintf(pos, sizeof(rd) - (pos - rd), "%u.%u.%u.%u:%u",
                     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));
@@ -745,14 +796,14 @@ bgp_vpn_rd_print(netdissect_options *ndo,
 
     case 2:
         /* 4-byte-AS:number fmt */
-        nd_snprintf(pos, sizeof(rd) - (pos - rd), "%s:%u (%u.%u.%u.%u:%u)",
+        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:
-        nd_snprintf(pos, sizeof(rd) - (pos - rd), "unknown RD format");
+        snprintf(pos, sizeof(rd) - (pos - rd), "unknown RD format");
         break;
     }
     pos += strlen(pos);
@@ -771,6 +822,8 @@ bgp_extended_community_print(netdissect_options *ndo,
         float f;
         uint32_t i;
     } bw;
+    /* allocate space for the largest possible string */
+    char astostr[AS_STR_SIZE];
 
     switch (GET_BE_U_2(pptr)) {
 
@@ -780,7 +833,7 @@ bgp_extended_community_print(netdissect_options *ndo,
         ND_PRINT("%u:%u (= %s)",
                  GET_BE_U_2(pptr + 2),
                  GET_BE_U_4(pptr + 4),
-                 ipaddr_string(ndo, pptr+4));
+                 GET_IPADDR_STRING(pptr+4));
         break;
 
     case BGP_EXT_COM_RT_1:
@@ -788,7 +841,7 @@ bgp_extended_community_print(netdissect_options *ndo,
     case BGP_EXT_COM_L2VPN_RT_1:
     case BGP_EXT_COM_VRF_RT_IMP:
         ND_PRINT("%s:%u",
-                 ipaddr_string(ndo, pptr+2),
+                 GET_IPADDR_STRING(pptr+2),
                  GET_BE_U_2(pptr + 6));
         break;
 
@@ -800,7 +853,7 @@ bgp_extended_community_print(netdissect_options *ndo,
             break;
 
     case BGP_EXT_COM_LINKBAND:
-            bw.i = GET_BE_U_4(pptr + 2);
+            bw.i = GET_BE_U_4(pptr + 4);
             ND_PRINT("bandwidth: %.3f Mbps",
                      bw.f*8/1000000);
             break;
@@ -811,13 +864,13 @@ bgp_extended_community_print(netdissect_options *ndo,
     case BGP_EXT_COM_VPN_ORIGIN4:
     case BGP_EXT_COM_OSPF_RID:
     case BGP_EXT_COM_OSPF_RID2:
-        ND_PRINT("%s", ipaddr_string(ndo, pptr+2));
+        ND_PRINT("%s", GET_IPADDR_STRING(pptr+2));
         break;
 
     case BGP_EXT_COM_OSPF_RTYPE:
     case BGP_EXT_COM_OSPF_RTYPE2:
         ND_PRINT("area:%s, router-type:%s, metric-type:%s%s",
-                 ipaddr_string(ndo, pptr+2),
+                 GET_IPADDR_STRING(pptr+2),
                  tok2str(bgp_extd_comm_ospf_rtype_values,
                          "unknown (0x%02x)",
                          GET_U_1((pptr + 6))),
@@ -838,6 +891,12 @@ bgp_extended_community_print(netdissect_options *ndo,
         ND_PRINT("AS %u", GET_BE_U_2(pptr + 2));
         break;
 
+    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;
+
     default:
         ND_PRINT("%02x%02x%02x%02x%02x%02x",
                  GET_U_1(pptr + 2),
@@ -850,16 +909,106 @@ bgp_extended_community_print(netdissect_options *ndo,
     }
 }
 
+/*
+ * 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
 decode_rt_routing_info(netdissect_options *ndo,
                        const u_char *pptr)
 {
+    uint8_t route_target[8];
     u_int plen;
-    char asbuf[sizeof(astostr)]; /* bgp_vpn_rd_print() overwrites astostr */
+    /* allocate space for the largest possible string */
+    char astostr[AS_STR_SIZE];
+    u_int num_octets;
 
     /* NLRI "prefix length" from RFC 2858 Section 4. */
-    ND_TCHECK_1(pptr);
     plen = GET_U_1(pptr);   /* get prefix length */
 
     /* NLRI "prefix" (ibid), valid lengths are { 0, 32, 33, ..., 96 } bits.
@@ -878,36 +1027,41 @@ decode_rt_routing_info(netdissect_options *ndo,
     }
 
     /* With at least "origin AS", possibly with "route target". */
-    ND_TCHECK_4(pptr + 1);
-    as_printf(ndo, asbuf, sizeof(asbuf), GET_BE_U_4(pptr + 1));
+    as_printf(ndo, astostr, sizeof(astostr), GET_BE_U_4(pptr + 1));
 
     plen -= 32; /* adjust prefix length */
 
-    /* An extended community is 8 octets, so the remaining prefix
-     * length must be 64.
-     */
-    if (64 != plen) {
-        ND_PRINT("\n\t    (illegal prefix length)");
+    if (64 < plen) {
+        ND_PRINT("\n\t      (illegal prefix length)");
         return -1;
     }
-    ND_TCHECK_LEN(pptr + 5, 8);
-    ND_PRINT("\n\t      origin AS: %s, route target ", asbuf);
-    bgp_extended_community_print(ndo, pptr + 5);
 
-    return 5 + 8;
+    /* 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));
 
-trunc:
-    return -2;
+    return 5 + num_octets;
 }
 
 static int
 decode_labeled_vpn_prefix4(netdissect_options *ndo,
                            const u_char *pptr, char *buf, size_t buflen)
 {
-    struct in_addr addr;
+    nd_ipv4 addr;
     u_int plen;
 
-    ND_TCHECK_1(pptr);
     plen = GET_U_1(pptr);   /* get prefix length */
 
     if ((24+64) > plen)
@@ -919,14 +1073,13 @@ decode_labeled_vpn_prefix4(netdissect_options *ndo,
         return -1;
 
     memset(&addr, 0, sizeof(addr));
-    ND_TCHECK_LEN(pptr + 12, (plen + 7) / 8);
-    memcpy(&addr, pptr + 12, (plen + 7) / 8);
+    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 */
-    nd_snprintf(buf, buflen, "RD: %s, %s/%u, label:%u %s",
+    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,
@@ -934,9 +1087,6 @@ decode_labeled_vpn_prefix4(netdissect_options *ndo,
                 ((GET_U_1(pptr + 3) & 1) == 0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
 
     return 12 + (plen + 7) / 8;
-
-trunc:
-    return -2;
 }
 
 /*
@@ -958,8 +1108,6 @@ decode_mdt_vpn_nlri(netdissect_options *ndo,
     const u_char *rd;
     const u_char *vpn_ip;
 
-    ND_TCHECK_1(pptr);
-
     /* if the NLRI is not predefined length, quit.*/
     if (GET_U_1(pptr) != MDT_VPN_NLRI_LEN * 8)
         return -1;
@@ -971,15 +1119,12 @@ decode_mdt_vpn_nlri(netdissect_options *ndo,
     pptr += 8;
 
     /* IPv4 address */
-    ND_TCHECK_LEN(pptr, sizeof(nd_ipv4));
     vpn_ip = pptr;
     pptr += sizeof(nd_ipv4);
 
     /* MDT Group Address */
-    ND_TCHECK_LEN(pptr, sizeof(nd_ipv4));
-
-    nd_snprintf(buf, buflen, "RD: %s, VPN IP Address: %s, MC Group Address: %s",
-                bgp_vpn_rd_print(ndo, rd), ipaddr_string(ndo, vpn_ip), ipaddr_string(ndo, pptr));
+    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;
 
@@ -1010,17 +1155,18 @@ static int
 decode_multicast_vpn(netdissect_options *ndo,
                      const u_char *pptr, char *buf, size_t buflen)
 {
+    /* 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;
 
-    ND_TCHECK_2(pptr);
     route_type = GET_U_1(pptr);
     pptr++;
     route_length = GET_U_1(pptr);
     pptr++;
 
-    nd_snprintf(buf, buflen, "Route-Type: %s (%u), length: %u",
+    snprintf(buf, buflen, "Route-Type: %s (%u), length: %u",
          tok2str(bgp_multicast_vpn_route_type_values,
                  "Unknown", route_type),
          route_type, route_length);
@@ -1029,7 +1175,7 @@ decode_multicast_vpn(netdissect_options *ndo,
     case BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_I_PMSI:
         ND_TCHECK_LEN(pptr, BGP_VPN_RD_LEN);
         offset = (u_int)strlen(buf);
-        nd_snprintf(buf + offset, buflen - offset, ", RD: %s, Originator %s",
+        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));
@@ -1037,7 +1183,7 @@ decode_multicast_vpn(netdissect_options *ndo,
     case BGP_MULTICAST_VPN_ROUTE_TYPE_INTER_AS_I_PMSI:
         ND_TCHECK_LEN(pptr, BGP_VPN_RD_LEN + 4);
         offset = (u_int)strlen(buf);
-        nd_snprintf(buf + offset, buflen - offset, ", RD: %s, Source-AS %s",
+        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)));
@@ -1046,7 +1192,7 @@ decode_multicast_vpn(netdissect_options *ndo,
     case BGP_MULTICAST_VPN_ROUTE_TYPE_S_PMSI:
         ND_TCHECK_LEN(pptr, BGP_VPN_RD_LEN);
         offset = (u_int)strlen(buf);
-        nd_snprintf(buf + offset, buflen - offset, ", RD: %s",
+        snprintf(buf + offset, buflen - offset, ", RD: %s",
                     bgp_vpn_rd_print(ndo, pptr));
         pptr += BGP_VPN_RD_LEN;
 
@@ -1055,14 +1201,14 @@ decode_multicast_vpn(netdissect_options *ndo,
 
         ND_TCHECK_LEN(pptr, addr_length);
         offset = (u_int)strlen(buf);
-        nd_snprintf(buf + offset, buflen - offset, ", Originator %s",
+        snprintf(buf + offset, buflen - offset, ", Originator %s",
                     bgp_vpn_ip_print(ndo, pptr, addr_length << 3));
         break;
 
     case BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_ACTIVE:
         ND_TCHECK_LEN(pptr, BGP_VPN_RD_LEN);
         offset = (u_int)strlen(buf);
-        nd_snprintf(buf + offset, buflen - offset, ", RD: %s",
+        snprintf(buf + offset, buflen - offset, ", RD: %s",
                     bgp_vpn_rd_print(ndo, pptr));
         pptr += BGP_VPN_RD_LEN;
 
@@ -1073,7 +1219,7 @@ decode_multicast_vpn(netdissect_options *ndo,
     case BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_TREE_JOIN:
         ND_TCHECK_LEN(pptr, BGP_VPN_RD_LEN + 4);
         offset = (u_int)strlen(buf);
-        nd_snprintf(buf + offset, buflen - offset, ", RD: %s, Source-AS %s",
+        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)));
@@ -1123,7 +1269,6 @@ decode_labeled_vpn_l2(netdissect_options *ndo,
     u_int plen, tlen, tlv_type, tlv_len, ttlv_len;
     int stringlen;
 
-    ND_TCHECK_2(pptr);
     plen = GET_BE_U_2(pptr);
     tlen = plen;
     pptr += 2;
@@ -1135,9 +1280,9 @@ decode_labeled_vpn_l2(netdissect_options *ndo,
         /* assume AD-only with RD, BGPNH */
         ND_TCHECK_LEN(pptr, 12);
         buf[0] = '\0';
-        stringlen = nd_snprintf(buf, buflen, "RD: %s, BGPNH: %s",
+        stringlen = snprintf(buf, buflen, "RD: %s, BGPNH: %s",
                                 bgp_vpn_rd_print(ndo, pptr),
-                                ipaddr_string(ndo, pptr+8));
+                                GET_IPADDR_STRING(pptr+8));
         UPDATE_BUF_BUFLEN(buf, buflen, stringlen);
         pptr += 12;
         tlen -= 12;
@@ -1148,7 +1293,7 @@ decode_labeled_vpn_l2(netdissect_options *ndo,
 
         ND_TCHECK_LEN(pptr, 15);
         buf[0] = '\0';
-        stringlen = nd_snprintf(buf, buflen, "RD: %s, CE-ID: %u, Label-Block Offset: %u, Label Base %u",
+        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),
@@ -1161,12 +1306,11 @@ decode_labeled_vpn_l2(netdissect_options *ndo,
         while (tlen != 0) {
             if (tlen < 3) {
                 if (buflen != 0) {
-                    stringlen=nd_snprintf(buf,buflen, "\n\t\tran past the end");
+                    stringlen=snprintf(buf,buflen, "\n\t\tran past the end");
                     UPDATE_BUF_BUFLEN(buf, buflen, stringlen);
                 }
                 return plen + 2;
             }
-            ND_TCHECK_3(pptr);
             tlv_type = GET_U_1(pptr);
             pptr++;
             tlv_len = GET_BE_U_2(pptr);  /* length, in *bits* */
@@ -1176,7 +1320,7 @@ decode_labeled_vpn_l2(netdissect_options *ndo,
             switch(tlv_type) {
             case 1:
                 if (buflen != 0) {
-                    stringlen=nd_snprintf(buf,buflen, "\n\t\tcircuit status vector (%u) length: %u: 0x",
+                    stringlen=snprintf(buf,buflen, "\n\t\tcircuit status vector (%u) length: %u: 0x",
                                           tlv_type,
                                           tlv_len);
                     UPDATE_BUF_BUFLEN(buf, buflen, stringlen);
@@ -1184,14 +1328,14 @@ decode_labeled_vpn_l2(netdissect_options *ndo,
                 while (ttlv_len != 0) {
                     if (tlen < 1) {
                         if (buflen != 0) {
-                            stringlen=nd_snprintf(buf,buflen, " (ran past the end)");
+                            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=nd_snprintf(buf,buflen, "%02x",
+                        stringlen=snprintf(buf,buflen, "%02x",
                                               GET_U_1(pptr));
                         pptr++;
                         UPDATE_BUF_BUFLEN(buf, buflen, stringlen);
@@ -1202,14 +1346,14 @@ decode_labeled_vpn_l2(netdissect_options *ndo,
                 break;
             default:
                 if (buflen != 0) {
-                    stringlen=nd_snprintf(buf,buflen, "\n\t\tunknown TLV #%u, length: %u",
+                    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=nd_snprintf(buf,buflen, " (ran past the end)");
+                        stringlen=snprintf(buf,buflen, " (ran past the end)");
                         UPDATE_BUF_BUFLEN(buf, buflen, stringlen);
                     }
                     return plen + 2;
@@ -1233,10 +1377,9 @@ int
 decode_prefix6(netdissect_options *ndo,
                const u_char *pd, u_int itemlen, char *buf, size_t buflen)
 {
-    struct in6_addr addr;
+    nd_ipv6 addr;
     u_int plen, plenbytes;
 
-    ND_TCHECK_1(pd);
     ITEMCHECK(1);
     plen = GET_U_1(pd);
     if (128 < plen)
@@ -1245,28 +1388,24 @@ decode_prefix6(netdissect_options *ndo,
 
     memset(&addr, 0, sizeof(addr));
     plenbytes = (plen + 7) / 8;
-    ND_TCHECK_LEN(pd + 1, plenbytes);
     ITEMCHECK(plenbytes);
-    memcpy(&addr, pd + 1, plenbytes);
+    GET_CPY_BYTES(&addr, pd + 1, plenbytes);
     if (plen % 8) {
-        addr.s6_addr[plenbytes - 1] &=
+        addr[plenbytes - 1] &=
             ((0xff00 >> (plen % 8)) & 0xff);
     }
-    nd_snprintf(buf, buflen, "%s/%u", ip6addr_string(ndo, (const u_char *)&addr), plen);
+    snprintf(buf, buflen, "%s/%u", ip6addr_string(ndo, (const u_char *)&addr), plen);
     return 1 + plenbytes;
 
-trunc:
-    return -2;
-
 badtlv:
-    return -3;
+    return -2;
 }
 
 static int
 decode_labeled_prefix6(netdissect_options *ndo,
                const u_char *pptr, u_int itemlen, char *buf, size_t buflen)
 {
-    struct in6_addr addr;
+    nd_ipv6 addr;
     u_int plen, plenbytes;
 
     /* prefix length and label = 4 bytes */
@@ -1285,14 +1424,13 @@ decode_labeled_prefix6(netdissect_options *ndo,
 
     memset(&addr, 0, sizeof(addr));
     plenbytes = (plen + 7) / 8;
-    ND_TCHECK_LEN(pptr + 4, plenbytes);
-    memcpy(&addr, pptr + 4, plenbytes);
+    GET_CPY_BYTES(&addr, pptr + 4, plenbytes);
     if (plen % 8) {
-        addr.s6_addr[plenbytes - 1] &=
+        addr[plenbytes - 1] &=
             ((0xff00 >> (plen % 8)) & 0xff);
     }
     /* the label may get offsetted by 4 bits so lets shift it right */
-    nd_snprintf(buf, buflen, "%s/%u, label:%u %s",
+    snprintf(buf, buflen, "%s/%u, label:%u %s",
                 ip6addr_string(ndo, (const u_char *)&addr),
                 plen,
                 GET_BE_U_3(pptr + 1)>>4,
@@ -1311,10 +1449,9 @@ static int
 decode_labeled_vpn_prefix6(netdissect_options *ndo,
                            const u_char *pptr, char *buf, size_t buflen)
 {
-    struct in6_addr addr;
+    nd_ipv6 addr;
     u_int plen;
 
-    ND_TCHECK_1(pptr);
     plen = GET_U_1(pptr);   /* get prefix length */
 
     if ((24+64) > plen)
@@ -1326,14 +1463,13 @@ decode_labeled_vpn_prefix6(netdissect_options *ndo,
         return -1;
 
     memset(&addr, 0, sizeof(addr));
-    ND_TCHECK_LEN(pptr + 12, (plen + 7) / 8);
-    memcpy(&addr, pptr + 12, (plen + 7) / 8);
+    GET_CPY_BYTES(&addr, pptr + 12, (plen + 7) / 8);
     if (plen % 8) {
-        addr.s6_addr[(plen + 7) / 8 - 1] &=
+        addr[(plen + 7) / 8 - 1] &=
             ((0xff00 >> (plen % 8)) & 0xff);
     }
     /* the label may get offsetted by 4 bits so lets shift it right */
-    nd_snprintf(buf, buflen, "RD: %s, %s/%u, label:%u %s",
+    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,
@@ -1341,9 +1477,6 @@ decode_labeled_vpn_prefix6(netdissect_options *ndo,
                 ((GET_U_1(pptr + 3) & 1) == 0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
 
     return 12 + (plen + 7) / 8;
-
-trunc:
-    return -2;
 }
 
 static int
@@ -1353,27 +1486,23 @@ decode_clnp_prefix(netdissect_options *ndo,
     uint8_t addr[19];
     u_int plen;
 
-    ND_TCHECK_1(pptr);
     plen = GET_U_1(pptr); /* get prefix length */
 
     if (152 < plen)
         return -1;
 
     memset(&addr, 0, sizeof(addr));
-    ND_TCHECK_LEN(pptr + 4, (plen + 7) / 8);
-    memcpy(&addr, pptr + 4, (plen + 7) / 8);
+    GET_CPY_BYTES(&addr, pptr + 4, (plen + 7) / 8);
     if (plen % 8) {
         addr[(plen + 7) / 8 - 1] &=
             ((0xff00 >> (plen % 8)) & 0xff);
     }
-    nd_snprintf(buf, buflen, "%s/%u",
+    /* 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;
-
-trunc:
-    return -2;
 }
 
 static int
@@ -1383,7 +1512,6 @@ decode_labeled_vpn_clnp_prefix(netdissect_options *ndo,
     uint8_t addr[19];
     u_int plen;
 
-    ND_TCHECK_1(pptr);
     plen = GET_U_1(pptr);   /* get prefix length */
 
     if ((24+64) > plen)
@@ -1395,13 +1523,13 @@ decode_labeled_vpn_clnp_prefix(netdissect_options *ndo,
         return -1;
 
     memset(&addr, 0, sizeof(addr));
-    ND_TCHECK_LEN(pptr + 12, (plen + 7) / 8);
-    memcpy(&addr, pptr + 12, (plen + 7) / 8);
+    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 */
-    nd_snprintf(buf, buflen, "RD: %s, %s/%u, label:%u %s",
+    /* 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,
@@ -1409,9 +1537,6 @@ decode_labeled_vpn_clnp_prefix(netdissect_options *ndo,
                 ((GET_U_1(pptr + 3) & 1) == 0) ? "(BOGUS: Bottom of Stack NOT set!)" : "(bottom)" );
 
     return 12 + (plen + 7) / 8;
-
-trunc:
-    return -2;
 }
 
 /*
@@ -1441,15 +1566,12 @@ bgp_attr_get_as_size(netdissect_options *ndo,
      * each.
      */
     while (tptr < pptr + len) {
-        ND_TCHECK_1(tptr);
-
         /*
          * 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;
         }
-        ND_TCHECK_1(tptr + 1);
         tptr += 2 + GET_U_1(tptr + 1) * 2;
     }
 
@@ -1621,8 +1743,6 @@ bgp_nlri_print(netdissect_options *ndo, uint16_t af, uint8_t safi,
                 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);
@@ -1648,15 +1768,11 @@ bgp_nlri_print(netdissect_options *ndo, uint16_t af, uint8_t safi,
                 advance = decode_labeled_vpn_prefix4(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;
             case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
                 advance = decode_rt_routing_info(ndo, tptr);
-                if (advance == -2)
-                    goto trunc;
                 break;
             case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN): /* fall through */
             case (AFNUM_INET6<<8 | SAFNUM_MULTICAST_VPN):
@@ -1689,8 +1805,6 @@ bgp_nlri_print(netdissect_options *ndo, uint16_t af, uint8_t safi,
                 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);
@@ -1716,8 +1830,6 @@ bgp_nlri_print(netdissect_options *ndo, uint16_t af, uint8_t safi,
                 advance = decode_labeled_vpn_prefix6(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;
@@ -1739,8 +1851,6 @@ bgp_nlri_print(netdissect_options *ndo, uint16_t af, uint8_t safi,
                 advance = decode_clnp_prefix(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;
@@ -1750,8 +1860,6 @@ bgp_nlri_print(netdissect_options *ndo, uint16_t af, uint8_t safi,
                 advance = decode_labeled_vpn_clnp_prefix(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;
@@ -1771,8 +1879,11 @@ trunc:	/* we rely on the caller to recognize -2 return value */
 
 static int
 bgp_attr_print(netdissect_options *ndo,
-               uint8_t atype, const u_char *pptr, u_int len)
+               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;
@@ -1792,7 +1903,6 @@ bgp_attr_print(netdissect_options *ndo,
         if (len != 1)
             ND_PRINT("invalid len");
         else {
-            ND_TCHECK_1(tptr);
             ND_PRINT("%s", tok2str(bgp_origin_values,
                       "Unknown Origin Typecode",
                       GET_U_1(tptr)));
@@ -1824,10 +1934,8 @@ bgp_attr_print(netdissect_options *ndo,
         as_size = bgp_attr_get_as_size(ndo, atype, pptr, len);
 
         while (tptr < pptr + len) {
-            ND_TCHECK_1(tptr);
             ND_PRINT("%s", tok2str(bgp_as_path_segment_open_values,
                       "?", GET_U_1(tptr)));
-            ND_TCHECK_1(tptr + 1);
             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 ",
@@ -1836,10 +1944,8 @@ bgp_attr_print(netdissect_options *ndo,
                               GET_BE_U_2(tptr + i + 2) :
                               GET_BE_U_4(tptr + i + 2)));
             }
-            ND_TCHECK_1(tptr);
             ND_PRINT("%s", tok2str(bgp_as_path_segment_close_values,
                       "?", GET_U_1(tptr)));
-            ND_TCHECK_1(tptr + 1);
             tptr += 2 + GET_U_1(tptr + 1) * as_size;
         }
         break;
@@ -1847,8 +1953,7 @@ bgp_attr_print(netdissect_options *ndo,
         if (len != 4)
             ND_PRINT("invalid len");
         else {
-            ND_TCHECK_4(tptr);
-            ND_PRINT("%s", ipaddr_string(ndo, tptr));
+            ND_PRINT("%s", GET_IPADDR_STRING(tptr));
         }
         break;
     case BGPTYPE_MULTI_EXIT_DISC:
@@ -1856,7 +1961,6 @@ bgp_attr_print(netdissect_options *ndo,
         if (len != 4)
             ND_PRINT("invalid len");
         else {
-            ND_TCHECK_4(tptr);
             ND_PRINT("%u", GET_BE_U_4(tptr));
         }
         break;
@@ -1878,11 +1982,11 @@ bgp_attr_print(netdissect_options *ndo,
         if (len == 6) {
             ND_PRINT(" AS #%s, origin %s",
                       as_printf(ndo, astostr, sizeof(astostr), GET_BE_U_2(tptr)),
-                      ipaddr_string(ndo, tptr + 2));
+                      GET_IPADDR_STRING(tptr + 2));
         } else {
             ND_PRINT(" AS #%s, origin %s",
                       as_printf(ndo, astostr, sizeof(astostr),
-                      GET_BE_U_4(tptr)), ipaddr_string(ndo, tptr + 4));
+                      GET_BE_U_4(tptr)), GET_IPADDR_STRING(tptr + 4));
         }
         break;
     case BGPTYPE_AGGREGATOR4:
@@ -1890,10 +1994,9 @@ bgp_attr_print(netdissect_options *ndo,
             ND_PRINT("invalid len");
             break;
         }
-        ND_TCHECK_8(tptr);
         ND_PRINT(" AS #%s, origin %s",
                   as_printf(ndo, astostr, sizeof(astostr), GET_BE_U_4(tptr)),
-                  ipaddr_string(ndo, tptr + 4));
+                  GET_IPADDR_STRING(tptr + 4));
         break;
     case BGPTYPE_COMMUNITIES:
         if (len % 4) {
@@ -1932,8 +2035,7 @@ bgp_attr_print(netdissect_options *ndo,
             ND_PRINT("invalid len");
             break;
         }
-        ND_TCHECK_4(tptr);
-        ND_PRINT("%s",ipaddr_string(ndo, tptr));
+        ND_PRINT("%s",GET_IPADDR_STRING(tptr));
         break;
     case BGPTYPE_CLUSTER_LIST:
         if (len % 4) {
@@ -1941,11 +2043,10 @@ bgp_attr_print(netdissect_options *ndo,
             break;
         }
         while (tlen != 0) {
-            ND_TCHECK_4(tptr);
             if (tlen < 4)
                 goto trunc;
             ND_PRINT("%s%s",
-                      ipaddr_string(ndo, tptr),
+                      GET_IPADDR_STRING(tptr),
                       (tlen>4) ? ", " : "");
             tlen -=4;
             tptr +=4;
@@ -1961,17 +2062,23 @@ bgp_attr_print(netdissect_options *ndo,
 	if (ret < 0)
 	    break;
 
-        tptr +=3;
+        tptr += 3;
+        tlen -= 3;
 
         ND_TCHECK_1(tptr);
+        if (tlen < 1)
+            goto trunc;
         nhlen = GET_U_1(tptr);
-        tlen = nhlen;
         tptr++;
+        tlen--;
 
-        if (tlen) {
+        if (nhlen) {
             u_int nnh = 0;
+            uint8_t tnhlen = nhlen;
+            if (tlen < tnhlen)
+                goto trunc;
             ND_PRINT("\n\t    nexthop: ");
-            while (tlen != 0) {
+            while (tnhlen != 0) {
                 if (nnh++ > 0) {
                     ND_PRINT(", " );
                 }
@@ -1983,104 +2090,115 @@ bgp_attr_print(netdissect_options *ndo,
                 case (AFNUM_INET<<8 | SAFNUM_RT_ROUTING_INFO):
                 case (AFNUM_INET<<8 | SAFNUM_MULTICAST_VPN):
                 case (AFNUM_INET<<8 | SAFNUM_MDT):
-                    if (tlen < sizeof(nd_ipv4)) {
+                    if (tnhlen < sizeof(nd_ipv4)) {
                         ND_PRINT("invalid len");
-                        tlen = 0;
+                        tptr += tnhlen;
+                        tlen -= tnhlen;
+                        tnhlen = 0;
                     } else {
-                        ND_TCHECK_LEN(tptr, sizeof(nd_ipv4));
-                        ND_PRINT("%s",ipaddr_string(ndo, tptr));
-                        tlen -= sizeof(nd_ipv4);
+                        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):
-                    if (tlen < sizeof(nd_ipv4)+BGP_VPN_RD_LEN) {
+                    if (tnhlen < sizeof(nd_ipv4)+BGP_VPN_RD_LEN) {
                         ND_PRINT("invalid len");
-                        tlen = 0;
+                        tptr += tnhlen;
+                        tlen -= tnhlen;
+                        tnhlen = 0;
                     } else {
-                        ND_TCHECK_LEN(tptr,
-                                      sizeof(nd_ipv4) + BGP_VPN_RD_LEN);
                         ND_PRINT("RD: %s, %s",
                                   bgp_vpn_rd_print(ndo, tptr),
-                                  ipaddr_string(ndo, tptr+BGP_VPN_RD_LEN));
-                        tlen -= (sizeof(nd_ipv4)+BGP_VPN_RD_LEN);
+                                  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):
-                    if (tlen < sizeof(nd_ipv6)) {
+                    if (tnhlen < sizeof(nd_ipv6)) {
                         ND_PRINT("invalid len");
-                        tlen = 0;
+                        tptr += tnhlen;
+                        tlen -= tnhlen;
+                        tnhlen = 0;
                     } else {
-                        ND_TCHECK_LEN(tptr, sizeof(nd_ipv6));
-                        ND_PRINT("%s", ip6addr_string(ndo, tptr));
-                        tlen -= sizeof(nd_ipv6);
+                        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):
-                    if (tlen < sizeof(nd_ipv6)+BGP_VPN_RD_LEN) {
+                    if (tnhlen < sizeof(nd_ipv6)+BGP_VPN_RD_LEN) {
                         ND_PRINT("invalid len");
-                        tlen = 0;
+                        tptr += tnhlen;
+                        tlen -= tnhlen;
+                        tnhlen = 0;
                     } else {
-                        ND_TCHECK_LEN(tptr,
-                                      sizeof(nd_ipv6) + BGP_VPN_RD_LEN);
                         ND_PRINT("RD: %s, %s",
                                   bgp_vpn_rd_print(ndo, tptr),
-                                  ip6addr_string(ndo, tptr+BGP_VPN_RD_LEN));
-                        tlen -= (sizeof(nd_ipv6)+BGP_VPN_RD_LEN);
+                                  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 (tlen < sizeof(nd_ipv4)) {
+                    if (tnhlen < sizeof(nd_ipv4)) {
                         ND_PRINT("invalid len");
-                        tlen = 0;
+                        tptr += tnhlen;
+                        tlen -= tnhlen;
+                        tnhlen = 0;
                     } else {
-                        ND_TCHECK_LEN(tptr, sizeof(nd_ipv4));
-                        ND_PRINT("%s", ipaddr_string(ndo, tptr));
-                        tlen -= (sizeof(nd_ipv4));
+                        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):
-                    ND_TCHECK_LEN(tptr, tlen);
-                    ND_PRINT("%s", isonsap_string(ndo, tptr, tlen));
-                    tptr += tlen;
-                    tlen = 0;
+                    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):
-                    if (tlen < BGP_VPN_RD_LEN+1) {
+                    if (tnhlen < BGP_VPN_RD_LEN+1) {
                         ND_PRINT("invalid len");
-                        tlen = 0;
+                        tptr += tnhlen;
+                        tlen -= tnhlen;
+                        tnhlen = 0;
                     } else {
-                        ND_TCHECK_LEN(tptr, tlen);
+                        ND_TCHECK_LEN(tptr, tnhlen);
                         ND_PRINT("RD: %s, %s",
                                   bgp_vpn_rd_print(ndo, tptr),
-                                  isonsap_string(ndo, tptr+BGP_VPN_RD_LEN,tlen-BGP_VPN_RD_LEN));
+                                  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", ipaddr_string(ndo, tptr+BGP_VPN_RD_LEN+4));
+                            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", ip6addr_string(ndo, tptr+BGP_VPN_RD_LEN+3));
-                        tptr += tlen;
-                        tlen = 0;
+                            ND_PRINT(" = %s", GET_IP6ADDR_STRING(tptr+BGP_VPN_RD_LEN+3));
+                        tptr += tnhlen;
+                        tlen -= tnhlen;
+                        tnhlen = 0;
                     }
                     break;
                 default:
@@ -2089,26 +2207,38 @@ bgp_attr_print(netdissect_options *ndo,
 		     * an unsupported AFI/SAFI.
 		     */
                     ND_PRINT("ERROR: no AFI %u/SAFI %u nexthop decoder", af, safi);
-                    tptr += tlen;
-                    tlen = 0;
+                    tptr += tnhlen;
+                    tlen -= tnhlen;
+                    tnhlen = 0;
                     goto done;
                     break;
                 }
             }
         }
         ND_PRINT(", nh-length: %u", nhlen);
-        tptr += tlen;
 
-        ND_TCHECK_1(tptr);
+        /* 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--) {
-                ND_TCHECK_1(tptr);
-                ND_PRINT("\n\t      %u bytes", GET_U_1(tptr));
-                tptr += GET_U_1(tptr) + 1;
+                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");
@@ -2193,7 +2323,6 @@ bgp_attr_print(netdissect_options *ndo,
             goto trunc;
         flags = GET_U_1(tptr);
         tunnel_type = GET_U_1(tptr + 1);
-        tlen = len;
 
         ND_PRINT("\n\t    Tunnel-type %s (%u), Flags [%s], MPLS Label %u",
                   tok2str(bgp_pmsi_tunnel_values, "Unknown", tunnel_type),
@@ -2207,34 +2336,29 @@ bgp_attr_print(netdissect_options *ndo,
         switch (tunnel_type) {
         case BGP_PMSI_TUNNEL_PIM_SM: /* fall through */
         case BGP_PMSI_TUNNEL_PIM_BIDIR:
-            ND_TCHECK_8(tptr);
             ND_PRINT("\n\t      Sender %s, P-Group %s",
-                      ipaddr_string(ndo, tptr),
-                      ipaddr_string(ndo, tptr+4));
+                      GET_IPADDR_STRING(tptr),
+                      GET_IPADDR_STRING(tptr+4));
             break;
 
         case BGP_PMSI_TUNNEL_PIM_SSM:
-            ND_TCHECK_8(tptr);
             ND_PRINT("\n\t      Root-Node %s, P-Group %s",
-                      ipaddr_string(ndo, tptr),
-                      ipaddr_string(ndo, tptr+4));
+                      GET_IPADDR_STRING(tptr),
+                      GET_IPADDR_STRING(tptr+4));
             break;
         case BGP_PMSI_TUNNEL_INGRESS:
-            ND_TCHECK_4(tptr);
             ND_PRINT("\n\t      Tunnel-Endpoint %s",
-                      ipaddr_string(ndo, tptr));
+                      GET_IPADDR_STRING(tptr));
             break;
         case BGP_PMSI_TUNNEL_LDP_P2MP: /* fall through */
         case BGP_PMSI_TUNNEL_LDP_MP2MP:
-            ND_TCHECK_8(tptr);
             ND_PRINT("\n\t      Root-Node %s, LSP-ID 0x%08x",
-                      ipaddr_string(ndo, tptr),
+                      GET_IPADDR_STRING(tptr),
                       GET_BE_U_4(tptr + 4));
             break;
         case BGP_PMSI_TUNNEL_RSVP_P2MP:
-            ND_TCHECK_8(tptr);
             ND_PRINT("\n\t      Extended-Tunnel-ID %s, P2MP-ID 0x%08x",
-                      ipaddr_string(ndo, tptr),
+                      GET_IPADDR_STRING(tptr),
                       GET_BE_U_4(tptr + 4));
             break;
         default:
@@ -2249,12 +2373,7 @@ bgp_attr_print(netdissect_options *ndo,
         uint8_t type;
         uint16_t length;
 
-        tlen = len;
-
         while (tlen >= 3) {
-
-            ND_TCHECK_3(tptr);
-
             type = GET_U_1(tptr);
             length = GET_BE_U_2(tptr + 1);
             tptr += 3;
@@ -2271,7 +2390,6 @@ bgp_attr_print(netdissect_options *ndo,
             /*
              * Check if we can read the TLV data.
              */
-            ND_TCHECK_LEN(tptr + 3, length);
             if (tlen < length)
                 goto trunc;
 
@@ -2350,8 +2468,18 @@ bgp_attr_print(netdissect_options *ndo,
                 tptr += len;
                 break;
             }
-            /* FIXME check for recursion */
-            if (!bgp_attr_print(ndo, atype, tptr, alen))
+            /*
+             * 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;
@@ -2365,7 +2493,6 @@ bgp_attr_print(netdissect_options *ndo,
         }
         ND_PRINT("\n\t    ");
         while (len != 0) {
-            ND_TCHECK_LEN(tptr, 12);
             ND_PRINT("%u:%u:%u%s",
                       GET_BE_U_4(tptr),
                       GET_BE_U_4(tptr + 4),
@@ -2401,6 +2528,8 @@ static void
 bgp_capabilities_print(netdissect_options *ndo,
                        const u_char *opt, u_int caps_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;
 
@@ -2426,6 +2555,22 @@ bgp_capabilities_print(netdissect_options *ndo,
                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) {
@@ -2452,7 +2597,10 @@ bgp_capabilities_print(netdissect_options *ndo,
             }
             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:
             /*
@@ -2512,11 +2660,17 @@ static void
 bgp_open_print(netdissect_options *ndo,
                const u_char *dat, u_int length)
 {
+    /* 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)
@@ -2530,24 +2684,34 @@ bgp_open_print(netdissect_options *ndo,
         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", ipaddr_string(ndo, bgp_open_header->bgpo_id));
+    ND_PRINT("ID %s", GET_IPADDR_STRING(bgp_open_header->bgpo_id));
     optslen = GET_U_1(bgp_open_header->bgpo_optlen);
-    ND_PRINT("\n\t  Optional parameters, length: %u", optslen);
+    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 + BGP_OPEN_SIZE;
-    length -= BGP_OPEN_SIZE;
+    opt = dat + open_size;
+    length -= open_size;
 
     i = 0;
     while (i < optslen) {
-        uint8_t opt_type, opt_len;
+        uint8_t opt_type;
+        uint16_t opt_len;
 
-        ND_TCHECK_LEN(opt + i, BGP_OPT_SIZE);
-        if (length < BGP_OPT_SIZE + i)
+        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 = GET_U_1(bgpopt->bgpopt_len);
-        if (BGP_OPT_SIZE + i + opt_len > optslen) {
+        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;
@@ -2562,7 +2726,7 @@ bgp_open_print(netdissect_options *ndo,
         switch(opt_type) {
 
         case BGP_OPT_CAP:
-            bgp_capabilities_print(ndo, opt + BGP_OPT_SIZE + i,
+            bgp_capabilities_print(ndo, opt + opt_size + i,
                                    opt_len);
             break;
 
@@ -2572,7 +2736,7 @@ bgp_open_print(netdissect_options *ndo,
                opt_type);
                break;
         }
-        i += BGP_OPT_SIZE + opt_len;
+        i += opt_size + opt_len;
     }
     return;
 trunc:
@@ -2633,8 +2797,6 @@ bgp_update_print(netdissect_options *ndo,
                 ND_PRINT("\n\t    (illegal prefix length)");
                 break;
             } else if (wpfx == -2)
-                goto trunc;
-            else if (wpfx == -3)
                 goto trunc; /* bytes left, but not enough */
             else {
                 ND_PRINT("\n\t    %s", buf);
@@ -2668,6 +2830,9 @@ bgp_update_print(netdissect_options *ndo,
     }
 
     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;
@@ -2725,7 +2890,7 @@ bgp_update_print(netdissect_options *ndo,
             }
             if (length < alen)
                 goto trunc;
-            if (!bgp_attr_print(ndo, atype, p, alen))
+            if (!bgp_attr_print(ndo, atype, p, alen, 0))
                 goto trunc;
             p += alen;
             len -= alen;
@@ -2750,8 +2915,6 @@ bgp_update_print(netdissect_options *ndo,
                 ND_PRINT("\n\t    (illegal prefix length)");
                 break;
             } else if (i == -2)
-                goto trunc;
-            else if (i == -3)
                 goto trunc; /* bytes left, but not enough */
             else {
                 ND_PRINT("\n\t    %s", buf);
@@ -2775,8 +2938,6 @@ bgp_notification_print(netdissect_options *ndo,
     const struct bgp_notification *bgp_notification_header;
     const u_char *tptr;
     uint8_t bgpn_major, bgpn_minor;
-    uint8_t shutdown_comm_length;
-    uint8_t remainder_offset;
 
     ND_TCHECK_LEN(dat, BGP_NOTIFICATION_SIZE);
     if (length<BGP_NOTIFICATION_SIZE)
@@ -2829,12 +2990,11 @@ bgp_notification_print(netdissect_options *ndo,
                           bgpn_minor),
                   bgpn_minor);
 
-        /* draft-ietf-idr-cease-subcode-02 mentions optionally 7 bytes
+        /* 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_TCHECK_7(tptr);
             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),
@@ -2843,19 +3003,17 @@ bgp_notification_print(netdissect_options *ndo,
                       GET_BE_U_4(tptr + 3));
         }
         /*
-         * draft-ietf-idr-shutdown describes a method to send a communication
+         * 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;
-            ND_TCHECK_1(tptr);
-            shutdown_comm_length = GET_U_1(tptr);
-            remainder_offset = 0;
+            uint8_t shutdown_comm_length = GET_U_1(tptr);
+            uint8_t remainder_offset = 0;
             /* garbage, hexdump it all */
-            if (shutdown_comm_length > BGP_NOTIFY_MINOR_CEASE_ADMIN_SHUTDOWN_LEN ||
-                shutdown_comm_length > length - (BGP_NOTIFICATION_SIZE + 1)) {
+            if (shutdown_comm_length > length - (BGP_NOTIFICATION_SIZE + 1)) {
                 ND_PRINT(", invalid Shutdown Communication length");
             }
             else if (shutdown_comm_length == 0) {
@@ -2864,9 +3022,8 @@ bgp_notification_print(netdissect_options *ndo,
             }
             /* a proper shutdown communication */
             else {
-                ND_TCHECK_LEN(tptr + 1, shutdown_comm_length);
                 ND_PRINT(", Shutdown Communication (length: %u): \"", shutdown_comm_length);
-                (void)nd_printn(ndo, tptr+1, shutdown_comm_length, NULL);
+                nd_printjn(ndo, tptr+1, shutdown_comm_length);
                 ND_PRINT("\"");
                 remainder_offset += shutdown_comm_length + 1;
             }
@@ -2900,13 +3057,16 @@ bgp_route_refresh_print(netdissect_options *ndo,
 
     bgp_route_refresh_header = (const struct bgp_route_refresh *)pptr;
 
-    ND_PRINT("\n\t  AFI %s (%u), SAFI %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));
+    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);