When discussing the "gateway" keyword, don't say that the host must be

[tcpdump] / print-udp.c

diff --git a/print-udp.c b/print-udp.c
index dcd791371792074893f69c60e7ec5741c7886bc3..0d397d624e05131025ea208e60412500560831a5 100644 (file)
--- a/print-udp.c
+++ b/print-udp.c
@@ -21,27 +21,18 @@
 
 #ifndef lint
 static const char rcsid[] =
 
 #ifndef lint
 static const char rcsid[] =

-    "@(#) $Header: /tcpdump/master/tcpdump/print-udp.c,v 1.60 1999-10-07 23:47:12 mcr Exp $ (LBL)";
+    "@(#) $Header: /tcpdump/master/tcpdump/print-udp.c,v 1.94 2001-06-15 22:17:34 fenner Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"

 #endif
 
 #include <sys/param.h>
 #include <sys/time.h>
 #endif
 
 #include <sys/param.h>
 #include <sys/time.h>

-#include <sys/socket.h>

 
 #include <netinet/in.h>
 
 #include <netinet/in.h>

-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
-#include <netinet/ip_var.h>
-#include <netinet/udp.h>
-#include <netinet/udp_var.h>

 
 

-#ifdef NOERROR
-#undef NOERROR                                 /* Solaris sucks */
-#endif
-#ifdef T_UNSPEC
-#undef T_UNSPEC                                        /* SINIX does too */
-#endif
-#include <arpa/nameser.h>

 #ifdef SEGSIZE
 #undef SEGSIZE
 #endif
 #ifdef SEGSIZE
 #undef SEGSIZE
 #endif


@@ -50,23 +41,38 @@ static const char rcsid[] =
 #include <rpc/rpc.h>
 
 #include <stdio.h>
 #include <rpc/rpc.h>
 
 #include <stdio.h>

+#include <string.h>

 
 #include "interface.h"
 #include "addrtoname.h"
 #include "appletalk.h"
 
 
 #include "interface.h"
 #include "addrtoname.h"
 #include "appletalk.h"
 

-#include "nfsv2.h"
+#include "udp.h"
+
+#include "ip.h"
+#ifdef INET6
+#include "ip6.h"
+#endif
+
+#ifdef NOERROR
+#undef NOERROR                                 /* Solaris sucks */
+#endif
+#ifdef T_UNSPEC
+#undef T_UNSPEC                                        /* SINIX does too */
+#endif
+#include "nameser.h"
+#include "nfs.h"

 #include "bootp.h"
 
 struct rtcphdr {
 #include "bootp.h"
 
 struct rtcphdr {

-       u_short rh_flags;       /* T:2 P:1 CNT:5 PT:8 */
-       u_short rh_len;         /* length of message (in words) */
-       u_int rh_ssrc;          /* synchronization src id */
+       u_int16_t rh_flags;     /* T:2 P:1 CNT:5 PT:8 */
+       u_int16_t rh_len;       /* length of message (in words) */
+       u_int32_t rh_ssrc;      /* synchronization src id */

 };
 
 typedef struct {
 };
 
 typedef struct {

-       u_int upper;            /* more significant 32 bits */
-       u_int lower;            /* less significant 32 bits */
+       u_int32_t upper;        /* more significant 32 bits */
+       u_int32_t lower;        /* less significant 32 bits */

 } ntp64;
 
 /*
 } ntp64;
 
 /*


@@ -74,9 +80,9 @@ typedef struct {
  */
 struct rtcp_sr {
        ntp64 sr_ntp;           /* 64-bit ntp timestamp */
  */
 struct rtcp_sr {
        ntp64 sr_ntp;           /* 64-bit ntp timestamp */

-       u_int sr_ts;            /* reference media timestamp */
-       u_int sr_np;            /* no. packets sent */
-       u_int sr_nb;            /* no. bytes sent */
+       u_int32_t sr_ts;        /* reference media timestamp */
+       u_int32_t sr_np;        /* no. packets sent */
+       u_int32_t sr_nb;        /* no. bytes sent */

 };
 
 /*
 };
 
 /*


@@ -84,12 +90,12 @@ struct rtcp_sr {
  * Time stamps are middle 32-bits of ntp timestamp.
  */
 struct rtcp_rr {
  * Time stamps are middle 32-bits of ntp timestamp.
  */
 struct rtcp_rr {

-       u_int rr_srcid;         /* sender being reported */
-       u_int rr_nl;            /* no. packets lost */
-       u_int rr_ls;            /* extended last seq number received */
-       u_int rr_dv;            /* jitter (delay variance) */
-       u_int rr_lsr;           /* orig. ts from last rr from this src  */
-       u_int rr_dlsr;          /* time from recpt of last rr to xmit time */
+       u_int32_t rr_srcid;     /* sender being reported */
+       u_int32_t rr_nl;        /* no. packets lost */
+       u_int32_t rr_ls;        /* extended last seq number received */
+       u_int32_t rr_dv;        /* jitter (delay variance) */
+       u_int32_t rr_lsr;       /* orig. ts from last rr from this src  */
+       u_int32_t rr_dlsr;      /* time from recpt of last rr to xmit time */

 };
 
 /*XXX*/
 };
 
 /*XXX*/


@@ -111,7 +117,7 @@ static void
 vat_print(const void *hdr, u_int len, register const struct udphdr *up)
 {
        /* vat/vt audio */
 vat_print(const void *hdr, u_int len, register const struct udphdr *up)
 {
        /* vat/vt audio */

-       u_int ts = *(u_short *)hdr;
+       u_int ts = *(u_int16_t *)hdr;

        if ((ts & 0xf060) != 0) {
                /* probably vt */
                (void)printf(" udp/vt %u %d / %d",
        if ((ts & 0xf060) != 0) {
                /* probably vt */
                (void)printf(" udp/vt %u %d / %d",


@@ -119,8 +125,8 @@ vat_print(const void *hdr, u_int len, register const struct udphdr *up)
                             ts & 0x3ff, ts >> 10);
        } else {
                /* probably vat */
                             ts & 0x3ff, ts >> 10);
        } else {
                /* probably vat */

-               u_int i0 = ntohl(((u_int *)hdr)[0]);
-               u_int i1 = ntohl(((u_int *)hdr)[1]);
+               u_int32_t i0 = (u_int32_t)ntohl(((u_int *)hdr)[0]);
+               u_int32_t i1 = (u_int32_t)ntohl(((u_int *)hdr)[1]);

                printf(" udp/vat %u c%d %u%s",
                        (u_int32_t)(ntohs(up->uh_ulen) - sizeof(*up) - 8),
                        i0 & 0xffff,
                printf(" udp/vat %u c%d %u%s",
                        (u_int32_t)(ntohs(up->uh_ulen) - sizeof(*up) - 8),
                        i0 & 0xffff,


@@ -139,8 +145,8 @@ rtp_print(const void *hdr, u_int len, register const struct udphdr *up)
        /* rtp v1 or v2 */
        u_int *ip = (u_int *)hdr;
        u_int hasopt, hasext, contype, hasmarker;
        /* rtp v1 or v2 */
        u_int *ip = (u_int *)hdr;
        u_int hasopt, hasext, contype, hasmarker;

-       u_int i0 = ntohl(((u_int *)hdr)[0]);
-       u_int i1 = ntohl(((u_int *)hdr)[1]);
+       u_int32_t i0 = (u_int32_t)ntohl(((u_int *)hdr)[0]);
+       u_int32_t i1 = (u_int32_t)ntohl(((u_int *)hdr)[1]);

        u_int dlen = ntohs(up->uh_ulen) - sizeof(*up) - 8;
        const char * ptype;
 
        u_int dlen = ntohs(up->uh_ulen) - sizeof(*up) - 8;
        const char * ptype;
 


@@ -174,7 +180,7 @@ rtp_print(const void *hdr, u_int len, register const struct udphdr *up)
                i0 & 0xffff,
                i1);
        if (vflag) {
                i0 & 0xffff,
                i1);
        if (vflag) {

-               printf(" %u", i1);
+               printf(" %u", (u_int32_t)ntohl(((u_int *)hdr)[2]));

                if (hasopt) {
                        u_int i2, optlen;
                        do {
                if (hasopt) {
                        u_int i2, optlen;
                        do {


@@ -211,7 +217,7 @@ rtcp_print(const u_char *hdr, const u_char *ep)
        struct rtcp_sr *sr;
        struct rtcphdr *rh = (struct rtcphdr *)hdr;
        u_int len;
        struct rtcp_sr *sr;
        struct rtcphdr *rh = (struct rtcphdr *)hdr;
        u_int len;

-       u_short flags;
+       u_int16_t flags;

        int cnt;
        double ts, dts;
        if ((u_char *)(rh + 1) > ep) {
        int cnt;
        double ts, dts;
        if ((u_char *)(rh + 1) > ep) {


@@ -228,7 +234,7 @@ rtcp_print(const u_char *hdr, const u_char *ep)
                if (len != cnt * sizeof(*rr) + sizeof(*sr) + sizeof(*rh))
                        printf(" [%d]", len);
                if (vflag)
                if (len != cnt * sizeof(*rr) + sizeof(*sr) + sizeof(*rh))
                        printf(" [%d]", len);
                if (vflag)

-                 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
+                       printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));

                if ((u_char *)(sr + 1) > ep) {
                        printf(" [|rtcp]");
                        return (ep);
                if ((u_char *)(sr + 1) > ep) {
                        printf(" [|rtcp]");
                        return (ep);


@@ -246,18 +252,18 @@ rtcp_print(const u_char *hdr, const u_char *ep)
                        printf(" [%d]", len);
                rr = (struct rtcp_rr *)(rh + 1);
                if (vflag)
                        printf(" [%d]", len);
                rr = (struct rtcp_rr *)(rh + 1);
                if (vflag)

-                 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
+                       printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));

                break;
        case RTCP_PT_SDES:
                printf(" sdes %d", len);
                if (vflag)
                break;
        case RTCP_PT_SDES:
                printf(" sdes %d", len);
                if (vflag)

-                 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
+                       printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));

                cnt = 0;
                break;
        case RTCP_PT_BYE:
                printf(" bye %d", len);
                if (vflag)
                cnt = 0;
                break;
        case RTCP_PT_BYE:
                printf(" bye %d", len);
                if (vflag)

-                 printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));
+                       printf(" %u", (u_int32_t)ntohl(rh->rh_ssrc));

                cnt = 0;
                break;
        default:
                cnt = 0;
                break;
        default:


@@ -284,6 +290,100 @@ rtcp_print(const u_char *hdr, const u_char *ep)
        return (hdr + len);
 }
 
        return (hdr + len);
 }
 

+static int udp_cksum(register const struct ip *ip,
+                    register const struct udphdr *up,
+                    register int len)
+{
+       int i, tlen;
+       union phu {
+               struct phdr {
+                       u_int32_t src;
+                       u_int32_t dst;
+                       u_char mbz;
+                       u_char proto;
+                       u_int16_t len;
+               } ph;
+               u_int16_t pa[6];
+       } phu;
+       register const u_int16_t *sp;
+       u_int32_t sum;
+       tlen = ntohs(ip->ip_len) - ((const char *)up-(const char*)ip);
+
+       /* pseudo-header.. */
+       phu.ph.len = htons(tlen);
+       phu.ph.mbz = 0;
+       phu.ph.proto = IPPROTO_UDP;
+       memcpy(&phu.ph.src, &ip->ip_src.s_addr, sizeof(u_int32_t));
+       memcpy(&phu.ph.dst, &ip->ip_dst.s_addr, sizeof(u_int32_t));
+
+       sp = &phu.pa[0];
+       sum = sp[0]+sp[1]+sp[2]+sp[3]+sp[4]+sp[5];
+
+       sp = (const u_int16_t *)up;
+
+       for (i=0; i<(tlen&~1); i+= 2)
+               sum += *sp++;
+
+       if (tlen & 1) {
+               sum += htons( (*(const u_int8_t *)sp) << 8);
+       }
+
+       while (sum > 0xffff)
+               sum = (sum & 0xffff) + (sum >> 16);
+       sum = ~sum & 0xffff;
+
+       return (sum);
+}
+
+#ifdef INET6
+static int udp6_cksum(const struct ip6_hdr *ip6, const struct udphdr *up,
+       int len)
+{
+       int i, tlen;
+       register const u_int16_t *sp;
+       u_int32_t sum;
+       union {
+               struct {
+                       struct in6_addr ph_src;
+                       struct in6_addr ph_dst;
+                       u_int32_t       ph_len;
+                       u_int8_t        ph_zero[3];
+                       u_int8_t        ph_nxt;
+               } ph;
+               u_int16_t pa[20];
+       } phu;
+
+       tlen = ntohs(ip6->ip6_plen) + sizeof(struct ip6_hdr) -
+           ((const char *)up - (const char*)ip6);
+
+       /* pseudo-header */
+       memset(&phu, 0, sizeof(phu));
+       phu.ph.ph_src = ip6->ip6_src;
+       phu.ph.ph_dst = ip6->ip6_dst;
+       phu.ph.ph_len = htonl(tlen);
+       phu.ph.ph_nxt = IPPROTO_UDP;
+
+       sum = 0;
+       for (i = 0; i < sizeof(phu.pa) / sizeof(phu.pa[0]); i++)
+               sum += phu.pa[i];
+
+       sp = (const u_int16_t *)up;
+
+       for (i = 0; i < (tlen & ~1); i += 2)
+               sum += *sp++;
+
+       if (tlen & 1)
+               sum += htons((*(const u_int8_t *)sp) << 8);
+
+       while (sum > 0xffff)
+               sum = (sum & 0xffff) + (sum >> 16);
+       sum = ~sum & 0xffff;
+
+       return (sum);
+}
+#endif
+
+

 /* XXX probably should use getservbyname() and cache answers */
 #define TFTP_PORT 69           /*XXX*/
 #define KERBEROS_PORT 88       /*XXX*/
 /* XXX probably should use getservbyname() and cache answers */
 #define TFTP_PORT 69           /*XXX*/
 #define KERBEROS_PORT 88       /*XXX*/


@@ -291,29 +391,63 @@ rtcp_print(const u_char *hdr, const u_char *ep)
 #define SNMP_PORT 161          /*XXX*/
 #define NTP_PORT 123           /*XXX*/
 #define SNMPTRAP_PORT 162      /*XXX*/
 #define SNMP_PORT 161          /*XXX*/
 #define NTP_PORT 123           /*XXX*/
 #define SNMPTRAP_PORT 162      /*XXX*/

+#define ISAKMP_PORT 500                /*XXX*/
+#define TIMED_PORT 525         /*XXX*/

 #define RIP_PORT 520           /*XXX*/
 #define KERBEROS_SEC_PORT 750  /*XXX*/
 #define RIP_PORT 520           /*XXX*/
 #define KERBEROS_SEC_PORT 750  /*XXX*/

+#define L2TP_PORT 1701         /*XXX*/
+#define ISAKMP_PORT_USER1 7500 /*XXX - nonstandard*/
+#define ISAKMP_PORT_USER2 8500 /*XXX - nonstandard*/
+#define RX_PORT_LOW 7000       /*XXX*/
+#define RX_PORT_HIGH 7009      /*XXX*/
+#define NETBIOS_NS_PORT   137
+#define NETBIOS_DGRAM_PORT   138
+#define CISCO_AUTORP_PORT 496  /*XXX*/
+#define RADIUS_PORT 1645
+#define RADIUS_NEW_PORT 1812
+#define RADIUS_ACCOUNTING_PORT 1646
+#define RADIUS_NEW_ACCOUNTING_PORT 1813
+#define LWRES_PORT             921
+
+#ifdef INET6
+#define RIPNG_PORT 521         /*XXX*/
+#define DHCP6_SERV_PORT 546    /*XXX*/
+#define DHCP6_CLI_PORT 547     /*XXX*/
+#endif

 
 void
 
 void

-udp_print(register const u_char *bp, u_int length, register const u_char *bp2)
+udp_print(register const u_char *bp, u_int length,
+         register const u_char *bp2, int fragmented)

 {
        register const struct udphdr *up;
        register const struct ip *ip;
        register const u_char *cp;
        register const u_char *ep = bp + length;
 {
        register const struct udphdr *up;
        register const struct ip *ip;
        register const u_char *cp;
        register const u_char *ep = bp + length;

-       u_short sport, dport, ulen;
+       u_int16_t sport, dport, ulen;
+#ifdef INET6
+       register const struct ip6_hdr *ip6;
+#endif

 
        if (ep > snapend)
                ep = snapend;
        up = (struct udphdr *)bp;
        ip = (struct ip *)bp2;
 
        if (ep > snapend)
                ep = snapend;
        up = (struct udphdr *)bp;
        ip = (struct ip *)bp2;

+#ifdef INET6
+       if (IP_V(ip) == 6)
+               ip6 = (struct ip6_hdr *)bp2;
+       else
+               ip6 = NULL;
+#endif /*INET6*/

        cp = (u_char *)(up + 1);
        if (cp > snapend) {
        cp = (u_char *)(up + 1);
        if (cp > snapend) {

-               printf("[|udp]");
+               (void)printf("%s > %s: [|udp]",
+                       ipaddr_string(&ip->ip_src), ipaddr_string(&ip->ip_dst));

                return;
        }
        if (length < sizeof(struct udphdr)) {
                return;
        }
        if (length < sizeof(struct udphdr)) {

-               (void)printf(" truncated-udp %d", length);
+               (void)printf("%s > %s: truncated-udp %d",
+                       ipaddr_string(&ip->ip_src), ipaddr_string(&ip->ip_dst),
+                       length);

                return;
        }
        length -= sizeof(struct udphdr);
                return;
        }
        length -= sizeof(struct udphdr);


@@ -321,6 +455,13 @@ udp_print(register const u_char *bp, u_int length, register const u_char *bp2)
        sport = ntohs(up->uh_sport);
        dport = ntohs(up->uh_dport);
        ulen = ntohs(up->uh_ulen);
        sport = ntohs(up->uh_sport);
        dport = ntohs(up->uh_dport);
        ulen = ntohs(up->uh_ulen);

+       if (ulen < 8) {
+               (void)printf("%s > %s: truncated-udplength %d",
+                            ipaddr_string(&ip->ip_src),
+                            ipaddr_string(&ip->ip_dst),
+                            ulen);
+               return;
+       }

        if (packettype) {
                register struct rpc_msg *rp;
                enum msg_type direction;
        if (packettype) {
                register struct rpc_msg *rp;
                enum msg_type direction;


@@ -374,6 +515,24 @@ udp_print(register const u_char *bp, u_int length, register const u_char *bp2)
                        while (cp < ep)
                                cp = rtcp_print(cp, ep);
                        break;
                        while (cp < ep)
                                cp = rtcp_print(cp, ep);
                        break;

+
+               case PT_SNMP:
+                       (void)printf("%s.%s > %s.%s:",
+                               ipaddr_string(&ip->ip_src),
+                               udpport_string(sport),
+                               ipaddr_string(&ip->ip_dst),
+                               udpport_string(dport));
+                       snmp_print((const u_char *)(up + 1), length);
+                       break;
+
+               case PT_CNFP:
+                       (void)printf("%s.%s > %s.%s:",
+                               ipaddr_string(&ip->ip_src),
+                               udpport_string(sport),
+                               ipaddr_string(&ip->ip_dst),
+                               udpport_string(dport));
+                       cnfp_print(cp, length, (const u_char *)ip);
+                       break;

                }
                return;
        }
                }
                return;
        }


@@ -407,18 +566,69 @@ udp_print(register const u_char *bp, u_int length, register const u_char *bp2)
                    (atalk_port(sport) || atalk_port(dport))) {
                        if (vflag)
                                fputs("kip ", stdout);
                    (atalk_port(sport) || atalk_port(dport))) {
                        if (vflag)
                                fputs("kip ", stdout);

-                       atalk_print(cp, length);
+                       llap_print(cp, length);

                        return;
                }
        }
                        return;
                }
        }

-       (void)printf("%s.%s > %s.%s:",
-               ipaddr_string(&ip->ip_src), udpport_string(sport),
-               ipaddr_string(&ip->ip_dst), udpport_string(dport));
+#ifdef INET6
+       if (ip6) {
+               if (ip6->ip6_nxt == IPPROTO_UDP) {
+                       (void)printf("%s.%s > %s.%s: ",
+                               ip6addr_string(&ip6->ip6_src),
+                               udpport_string(sport),
+                               ip6addr_string(&ip6->ip6_dst),
+                               udpport_string(dport));
+               } else {
+                       (void)printf("%s > %s: ",
+                               udpport_string(sport), udpport_string(dport));
+               }
+       } else
+#endif /*INET6*/
+       {
+               if (ip->ip_p == IPPROTO_UDP) {
+                       (void)printf("%s.%s > %s.%s: ",
+                               ipaddr_string(&ip->ip_src),
+                               udpport_string(sport),
+                               ipaddr_string(&ip->ip_dst),
+                               udpport_string(dport));
+               } else {
+                       (void)printf("%s > %s: ",
+                               udpport_string(sport), udpport_string(dport));
+               }
+       }
+
+       if (IP_V(ip) == 4 && vflag && !fragmented) {
+               int sum = up->uh_sum;
+               if (sum == 0) {
+                       (void)printf("[no cksum] ");
+               } else if (TTEST2(cp[0], length)) {
+                       sum = udp_cksum(ip, up, length);
+                       if (sum != 0)
+                               (void)printf("[bad udp cksum %x!] ", sum);
+                       else
+                               (void)printf("[udp sum ok] ");
+               }
+       }
+#ifdef INET6
+       if (IP_V(ip) == 6 && ip6->ip6_plen && vflag && !fragmented) {
+               int sum = up->uh_sum;
+               /* for IPv6, UDP checksum is mandatory */
+               if (TTEST2(cp[0], length)) {
+                       sum = udp6_cksum(ip6, up, length);
+                       if (sum != 0)
+                               (void)printf("[bad udp cksum %x!] ", sum);
+                       else
+                               (void)printf("[udp sum ok] ");
+               }
+       }
+#endif

 
        if (!qflag) {
 #define ISPORT(p) (dport == (p) || sport == (p))
                if (ISPORT(NAMESERVER_PORT))
                        ns_print((const u_char *)(up + 1), length);
 
        if (!qflag) {
 #define ISPORT(p) (dport == (p) || sport == (p))
                if (ISPORT(NAMESERVER_PORT))
                        ns_print((const u_char *)(up + 1), length);

+               else if (ISPORT(TIMED_PORT))
+                       timed_print((const u_char *)(up + 1), length);

                else if (ISPORT(TFTP_PORT))
                        tftp_print((const u_char *)(up + 1), length);
                else if (ISPORT(IPPORT_BOOTPC) || ISPORT(IPPORT_BOOTPS))
                else if (ISPORT(TFTP_PORT))
                        tftp_print((const u_char *)(up + 1), length);
                else if (ISPORT(IPPORT_BOOTPC) || ISPORT(IPPORT_BOOTPS))


@@ -426,19 +636,58 @@ udp_print(register const u_char *bp, u_int length, register const u_char *bp2)
                            sport, dport);
                else if (ISPORT(RIP_PORT))
                        rip_print((const u_char *)(up + 1), length);
                            sport, dport);
                else if (ISPORT(RIP_PORT))
                        rip_print((const u_char *)(up + 1), length);

+               else if (ISPORT(ISAKMP_PORT))
+                       isakmp_print((const u_char *)(up + 1), length, bp2);
+#if 1 /*???*/
+               else if (ISPORT(ISAKMP_PORT_USER1) || ISPORT(ISAKMP_PORT_USER2))
+                       isakmp_print((const u_char *)(up + 1), length, bp2);
+#endif

                else if (ISPORT(SNMP_PORT) || ISPORT(SNMPTRAP_PORT))
                        snmp_print((const u_char *)(up + 1), length);
                else if (ISPORT(NTP_PORT))
                        ntp_print((const u_char *)(up + 1), length);
                else if (ISPORT(KERBEROS_PORT) || ISPORT(KERBEROS_SEC_PORT))
                        krb_print((const void *)(up + 1), length);
                else if (ISPORT(SNMP_PORT) || ISPORT(SNMPTRAP_PORT))
                        snmp_print((const u_char *)(up + 1), length);
                else if (ISPORT(NTP_PORT))
                        ntp_print((const u_char *)(up + 1), length);
                else if (ISPORT(KERBEROS_PORT) || ISPORT(KERBEROS_SEC_PORT))
                        krb_print((const void *)(up + 1), length);

+               else if (ISPORT(L2TP_PORT))
+                       l2tp_print((const u_char *)(up + 1), length);
+               else if (ISPORT(NETBIOS_NS_PORT)) {
+                       nbt_udp137_print((const u_char *)(up + 1), length);
+               }
+               else if (ISPORT(NETBIOS_DGRAM_PORT)) {
+                       nbt_udp138_print((const u_char *)(up + 1), length);
+               }

                else if (dport == 3456)
                        vat_print((const void *)(up + 1), length, up);
                else if (dport == 3456)
                        vat_print((const void *)(up + 1), length, up);

+               /*
+                * Since there are 10 possible ports to check, I think
+                * a <> test would be more efficient
+                */
+               else if ((sport >= RX_PORT_LOW && sport <= RX_PORT_HIGH) ||
+                        (dport >= RX_PORT_LOW && dport <= RX_PORT_HIGH))
+                       rx_print((const void *)(up + 1), length, sport, dport,
+                                (u_char *) ip);
+#ifdef INET6
+               else if (ISPORT(RIPNG_PORT))
+                       ripng_print((const u_char *)(up + 1), length);
+               else if (ISPORT(DHCP6_SERV_PORT) || ISPORT(DHCP6_CLI_PORT)) {
+                       dhcp6_print((const u_char *)(up + 1), length,
+                               sport, dport);
+               }
+#endif /*INET6*/

                /*
                 * Kludge in test for whiteboard packets.
                 */
                else if (dport == 4567)
                        wb_print((const void *)(up + 1), length);
                /*
                 * Kludge in test for whiteboard packets.
                 */
                else if (dport == 4567)
                        wb_print((const void *)(up + 1), length);

+               else if (ISPORT(CISCO_AUTORP_PORT))
+                       cisco_autorp_print((const void *)(up + 1), length);
+               else if (ISPORT(RADIUS_PORT) ||
+                        ISPORT(RADIUS_NEW_PORT) ||
+                        ISPORT(RADIUS_ACCOUNTING_PORT) || 
+                        ISPORT(RADIUS_NEW_ACCOUNTING_PORT) )
+                       radius_print((const u_char *)(up+1), length);
+               else if (ISPORT(LWRES_PORT))
+                       lwres_print((const u_char *)(up + 1), length);

                else
                        (void)printf(" udp %u",
                            (u_int32_t)(ulen - sizeof(*up)));
                else
                        (void)printf(" udp %u",
                            (u_int32_t)(ulen - sizeof(*up)));