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Current Path: /usr/src/contrib/tcpdump

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📄 CHANGES(57.87 KB)
📄 CONTRIBUTING(5.93 KB)
📄 CREDITS(14.57 KB)
📄 INSTALL.txt(5.25 KB)
📄 LICENSE(873 B)
📄 Makefile-devel-adds(614 B)
📄 Makefile.in(9.96 KB)
📄 PLATFORMS(567 B)
📄 README(9.04 KB)
📄 README.md(9.04 KB)
📄 VERSION(6 B)
📄 addrtoname.c(33.19 KB)
📄 addrtoname.h(2.78 KB)
📄 addrtostr.c(5.64 KB)
📄 addrtostr.h(2.03 KB)
📄 af.c(1.96 KB)
📄 af.h(1.81 KB)
📄 ah.h(2.34 KB)
📄 appletalk.h(4.06 KB)
📄 ascii_strcasecmp.c(3.5 KB)
📄 ascii_strcasecmp.h(1.49 KB)
📄 atime.awk(529 B)
📄 atm.h(1.14 KB)
📄 bpf_dump.c(1.9 KB)
📄 chdlc.h(1.31 KB)
📄 checksum.c(5.25 KB)
📄 config.guess(43.17 KB)
📄 config.h.in(11.19 KB)
📄 config.sub(34.93 KB)
📄 configure(255.88 KB)
📄 configure.ac(25.05 KB)
📄 configure.in(25.66 KB)
📄 cpack.c(3.92 KB)
📄 cpack.h(2.37 KB)
📄 ether.h(2.34 KB)
📄 ethertype.h(5.58 KB)
📄 extract.h(11.48 KB)
📄 funcattrs.h(4.42 KB)
📄 getopt_long.h(2.52 KB)
📄 gmpls.c(5.82 KB)
📄 gmpls.h(1.38 KB)
📄 gmt2local.c(2.01 KB)
📄 gmt2local.h(1.21 KB)
📄 in_cksum.c(6.44 KB)
📄 install-sh(5.45 KB)
📄 interface.h(2.29 KB)
📄 ip.h(5.75 KB)
📄 ip6.h(7.6 KB)
📄 ipproto.c(16.49 KB)
📄 ipproto.h(4.72 KB)
📄 l2vpn.c(3.36 KB)
📄 l2vpn.h(781 B)
📁 lbl
📄 llc.h(3.72 KB)
📄 machdep.c(2.58 KB)
📄 machdep.h(1.24 KB)
📄 makemib(6.41 KB)
📄 mib.h(26.33 KB)
📁 missing
📄 mkdep(2.43 KB)
📄 mpls.h(1.93 KB)
📄 nameser.h(10.8 KB)
📄 netdissect-stdinc.h(9.93 KB)
📄 netdissect.c(3.38 KB)
📄 netdissect.h(30.13 KB)
📄 nfs.h(13.37 KB)
📄 nfsfh.h(2.57 KB)
📄 nlpid.c(1.27 KB)
📄 nlpid.h(1.3 KB)
📄 openflow.h(2.14 KB)
📄 ospf.h(10.21 KB)
📄 oui.c(3.83 KB)
📄 oui.h(4.06 KB)
📄 packetdat.awk(1.39 KB)
📄 parsenfsfh.c(12.87 KB)
📄 pcap-missing.h(1.8 KB)
📄 pcap_dump_ftell.c(1.29 KB)
📄 ppp.h(3.07 KB)
📄 print-802_11.c(91.47 KB)
📄 print-802_15_4.c(5.5 KB)
📄 print-ah.c(2.02 KB)
📄 print-ahcp.c(10.73 KB)
📄 print-aodv.c(15.98 KB)
📄 print-aoe.c(11.13 KB)
📄 print-ap1394.c(4 KB)
📄 print-arcnet.c(8.83 KB)
📄 print-arp.c(14.57 KB)
📄 print-ascii.c(6.23 KB)
📄 print-atalk.c(16.76 KB)
📄 print-atm.c(16.81 KB)
📄 print-babel.c(23.79 KB)
📄 print-beep.c(1.71 KB)
📄 print-bfd.c(16.5 KB)
📄 print-bgp.c(99.77 KB)
📄 print-bootp.c(30.07 KB)
📄 print-bt.c(2.21 KB)
📄 print-calm-fast.c(1.81 KB)
📄 print-carp.c(2.43 KB)
📄 print-cdp.c(11.16 KB)
📄 print-cfm.c(24.19 KB)
📄 print-chdlc.c(5.88 KB)
📄 print-cip.c(2.5 KB)
📄 print-cnfp.c(13.69 KB)
📄 print-dccp.c(17.75 KB)
📄 print-decnet.c(37.63 KB)
📄 print-dhcp6.c(23.22 KB)
📄 print-domain.c(18.44 KB)
📄 print-dtp.c(3.03 KB)
📄 print-dvmrp.c(8.98 KB)
📄 print-eap.c(9.26 KB)
📄 print-egp.c(8.69 KB)
📄 print-eigrp.c(19.49 KB)
📄 print-enc.c(4.2 KB)
📄 print-esp.c(21.46 KB)
📄 print-ether.c(12.91 KB)
📄 print-fddi.c(10.51 KB)
📄 print-forces.c(45.01 KB)
📄 print-fr.c(31.99 KB)
📄 print-frag6.c(2.36 KB)
📄 print-ftp.c(973 B)
📄 print-geneve.c(6.13 KB)
📄 print-geonet.c(6.72 KB)
📄 print-gre.c(9.72 KB)
📄 print-hncp.c(26.39 KB)
📄 print-hsrp.c(4.57 KB)
📄 print-http.c(1.51 KB)
📄 print-icmp.c(22.7 KB)
📄 print-icmp6.c(59.81 KB)
📄 print-igmp.c(10.05 KB)
📄 print-igrp.c(4.64 KB)
📄 print-ip.c(17.04 KB)
📄 print-ip6.c(10.57 KB)
📄 print-ip6opts.c(5.53 KB)
📄 print-ipcomp.c(2.32 KB)
📄 print-ipfc.c(4.41 KB)
📄 print-ipnet.c(2.78 KB)
📄 print-ipx.c(6.42 KB)
📄 print-isakmp.c(81.72 KB)
📄 print-isoclns.c(107.61 KB)
📄 print-juniper.c(48.42 KB)
📄 print-krb.c(6.26 KB)
📄 print-l2tp.c(23.94 KB)
📄 print-lane.c(3.04 KB)
📄 print-ldp.c(24.35 KB)
📄 print-lisp.c(15.23 KB)
📄 print-llc.c(16.68 KB)
📄 print-lldp.c(57.26 KB)
📄 print-lmp.c(38.11 KB)
📄 print-loopback.c(3.63 KB)
📄 print-lspping.c(51.64 KB)
📄 print-lwapp.c(13.01 KB)
📄 print-lwres.c(14.08 KB)
📄 print-m3ua.c(10.92 KB)
📄 print-medsa.c(5.57 KB)
📄 print-mobile.c(3.28 KB)
📄 print-mobility.c(9.74 KB)
📄 print-mpcp.c(7.87 KB)
📄 print-mpls.c(5.31 KB)
📄 print-mptcp.c(13.68 KB)
📄 print-msdp.c(2.69 KB)
📄 print-msnlb.c(2.39 KB)
📄 print-nflog.c(4.4 KB)
📄 print-nfs.c(42.84 KB)
📄 print-nsh.c(5.39 KB)
📄 print-ntp.c(13.34 KB)
📄 print-null.c(4.01 KB)
📄 print-olsr.c(23.42 KB)
📄 print-openflow-1.0.c(76.63 KB)
📄 print-openflow.c(4.77 KB)
📄 print-ospf.c(39.49 KB)
📄 print-ospf6.c(29.86 KB)
📄 print-otv.c(2.1 KB)
📄 print-pflog.c(4.86 KB)
📄 print-pfsync.c(12.53 KB)
📄 print-pgm.c(22.17 KB)
📄 print-pim.c(32.59 KB)
📄 print-pktap.c(5.18 KB)
📄 print-ppi.c(2.68 KB)
📄 print-ppp.c(46.16 KB)
📄 print-pppoe.c(5.65 KB)
📄 print-pptp.c(25.9 KB)
📄 print-radius.c(35.1 KB)
📄 print-raw.c(1.52 KB)
📄 print-resp.c(16.5 KB)
📄 print-rip.c(9.19 KB)
📄 print-ripng.c(6 KB)
📄 print-rpki-rtr.c(10.83 KB)
📄 print-rrcp.c(4.56 KB)
📄 print-rsvp.c(78.61 KB)
📄 print-rt6.c(2.66 KB)
📄 print-rtsp.c(1.16 KB)
📄 print-rx.c(66.92 KB)
📄 print-sctp.c(23.13 KB)
📄 print-sflow.c(31.91 KB)
📄 print-sip.c(1.29 KB)
📄 print-sl.c(6.95 KB)
📄 print-sll.c(9.2 KB)
📄 print-slow.c(25.17 KB)
📄 print-smb.c(43.19 KB)
📄 print-smtp.c(983 B)
📄 print-snmp.c(43.17 KB)
📄 print-stp.c(17.18 KB)
📄 print-sunatm.c(3.27 KB)
📄 print-sunrpc.c(7.85 KB)
📄 print-symantec.c(3.78 KB)
📄 print-syslog.c(3.96 KB)
📄 print-tcp.c(35.84 KB)
📄 print-telnet.c(15.02 KB)
📄 print-tftp.c(5.2 KB)
📄 print-timed.c(4.74 KB)
📄 print-tipc.c(11.53 KB)
📄 print-token.c(7.96 KB)
📄 print-udld.c(5.47 KB)
📄 print-udp.c(21.28 KB)
📄 print-usb.c(4.18 KB)
📄 print-vjc.c(4.45 KB)
📄 print-vqp.c(6.8 KB)
📄 print-vrrp.c(6.37 KB)
📄 print-vtp.c(13.56 KB)
📄 print-vxlan-gpe.c(3.46 KB)
📄 print-vxlan.c(2.21 KB)
📄 print-wb.c(10.93 KB)
📄 print-zephyr.c(8.03 KB)
📄 print-zeromq.c(7.5 KB)
📄 print.c(11.54 KB)
📄 print.h(1.78 KB)
📄 rpc_auth.h(2.77 KB)
📄 rpc_msg.h(3.19 KB)
📄 rpl.h(4.88 KB)
📄 send-ack.awk(1.56 KB)
📄 setsignal.c(3.27 KB)
📄 setsignal.h(1.24 KB)
📄 signature.c(5.58 KB)
📄 signature.h(1.12 KB)
📄 slcompress.h(3.55 KB)
📄 smb.h(5.38 KB)
📄 smbutil.c(63.88 KB)
📄 stime.awk(567 B)
📄 strtoaddr.c(5.34 KB)
📄 strtoaddr.h(992 B)
📄 tcp.h(5.02 KB)
📄 tcpdump.1.in(60.82 KB)
📄 tcpdump.c(69.76 KB)
📄 timeval-operations.h(3.19 KB)
📄 udp.h(8.25 KB)
📄 util-print.c(23.75 KB)
📄 vfprintf.c(1.62 KB)

Editing: print-eigrp.c

/*
 * Copyright (c) 1998-2004  Hannes Gredler <hannes@gredler.at>
 *      The TCPDUMP project
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that: (1) source code
 * distributions retain the above copyright notice and this paragraph
 * in its entirety, and (2) distributions including binary code include
 * the above copyright notice and this paragraph in its entirety in
 * the documentation or other materials provided with the distribution.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE.
 */

/* \summary: Enhanced Interior Gateway Routing Protocol (EIGRP) printer */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <netdissect-stdinc.h>

#include <string.h>

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

/*
 * packet format documented at
 * http://www.rhyshaden.com/eigrp.htm
 * RFC 7868
 */

struct eigrp_common_header {
    uint8_t version;
    uint8_t opcode;
    uint8_t checksum[2];
    uint8_t flags[4];
    uint8_t seq[4];
    uint8_t ack[4];
    uint8_t asn[4];
};

#define	EIGRP_VERSION                        2

#define	EIGRP_OPCODE_UPDATE                  1
#define	EIGRP_OPCODE_QUERY                   3
#define	EIGRP_OPCODE_REPLY                   4
#define	EIGRP_OPCODE_HELLO                   5
#define	EIGRP_OPCODE_IPXSAP                  6
#define	EIGRP_OPCODE_PROBE                   7

static const struct tok eigrp_opcode_values[] = {
    { EIGRP_OPCODE_UPDATE, "Update" },
    { EIGRP_OPCODE_QUERY, "Query" },
    { EIGRP_OPCODE_REPLY, "Reply" },
    { EIGRP_OPCODE_HELLO, "Hello" },
    { EIGRP_OPCODE_IPXSAP, "IPX SAP" },
    { EIGRP_OPCODE_PROBE, "Probe" },
    { 0, NULL}
};

static const struct tok eigrp_common_header_flag_values[] = {
    { 0x01, "Init" },
    { 0x02, "Conditionally Received" },
    { 0, NULL}
};

struct eigrp_tlv_header {
    uint8_t type[2];
    uint8_t length[2];
};

#define EIGRP_TLV_GENERAL_PARM   0x0001
#define EIGRP_TLV_AUTH           0x0002
#define EIGRP_TLV_SEQ            0x0003
#define EIGRP_TLV_SW_VERSION     0x0004
#define EIGRP_TLV_MCAST_SEQ      0x0005
#define EIGRP_TLV_IP_INT         0x0102
#define EIGRP_TLV_IP_EXT         0x0103
#define EIGRP_TLV_AT_INT         0x0202
#define EIGRP_TLV_AT_EXT         0x0203
#define EIGRP_TLV_AT_CABLE_SETUP 0x0204
#define EIGRP_TLV_IPX_INT        0x0302
#define EIGRP_TLV_IPX_EXT        0x0303

static const struct tok eigrp_tlv_values[] = {
    { EIGRP_TLV_GENERAL_PARM, "General Parameters"},
    { EIGRP_TLV_AUTH, "Authentication"},
    { EIGRP_TLV_SEQ, "Sequence"},
    { EIGRP_TLV_SW_VERSION, "Software Version"},
    { EIGRP_TLV_MCAST_SEQ, "Next Multicast Sequence"},
    { EIGRP_TLV_IP_INT, "IP Internal routes"},
    { EIGRP_TLV_IP_EXT, "IP External routes"},
    { EIGRP_TLV_AT_INT, "AppleTalk Internal routes"},
    { EIGRP_TLV_AT_EXT, "AppleTalk External routes"},
    { EIGRP_TLV_AT_CABLE_SETUP, "AppleTalk Cable setup"},
    { EIGRP_TLV_IPX_INT, "IPX Internal routes"},
    { EIGRP_TLV_IPX_EXT, "IPX External routes"},
    { 0, NULL}
};

struct eigrp_tlv_general_parm_t {
    uint8_t k1;
    uint8_t k2;
    uint8_t k3;
    uint8_t k4;
    uint8_t k5;
    uint8_t res;
    uint8_t holdtime[2];
};

struct eigrp_tlv_sw_version_t {
    uint8_t ios_major;
    uint8_t ios_minor;
    uint8_t eigrp_major;
    uint8_t eigrp_minor;
};

struct eigrp_tlv_ip_int_t {
    uint8_t nexthop[4];
    uint8_t delay[4];
    uint8_t bandwidth[4];
    uint8_t mtu[3];
    uint8_t hopcount;
    uint8_t reliability;
    uint8_t load;
    uint8_t reserved[2];
    uint8_t plen;
    uint8_t destination; /* variable length [1-4] bytes encoding */
};

struct eigrp_tlv_ip_ext_t {
    uint8_t nexthop[4];
    uint8_t origin_router[4];
    uint8_t origin_as[4];
    uint8_t tag[4];
    uint8_t metric[4];
    uint8_t reserved[2];
    uint8_t proto_id;
    uint8_t flags;
    uint8_t delay[4];
    uint8_t bandwidth[4];
    uint8_t mtu[3];
    uint8_t hopcount;
    uint8_t reliability;
    uint8_t load;
    uint8_t reserved2[2];
    uint8_t plen;
    uint8_t destination; /* variable length [1-4] bytes encoding */
};

struct eigrp_tlv_at_cable_setup_t {
    uint8_t cable_start[2];
    uint8_t cable_end[2];
    uint8_t router_id[4];
};

struct eigrp_tlv_at_int_t {
    uint8_t nexthop[4];
    uint8_t delay[4];
    uint8_t bandwidth[4];
    uint8_t mtu[3];
    uint8_t hopcount;
    uint8_t reliability;
    uint8_t load;
    uint8_t reserved[2];
    uint8_t cable_start[2];
    uint8_t cable_end[2];
};

struct eigrp_tlv_at_ext_t {
    uint8_t nexthop[4];
    uint8_t origin_router[4];
    uint8_t origin_as[4];
    uint8_t tag[4];
    uint8_t proto_id;
    uint8_t flags;
    uint8_t metric[2];
    uint8_t delay[4];
    uint8_t bandwidth[4];
    uint8_t mtu[3];
    uint8_t hopcount;
    uint8_t reliability;
    uint8_t load;
    uint8_t reserved2[2];
    uint8_t cable_start[2];
    uint8_t cable_end[2];
};

static const struct tok eigrp_ext_proto_id_values[] = {
    { 0x01, "IGRP" },
    { 0x02, "EIGRP" },
    { 0x03, "Static" },
    { 0x04, "RIP" },
    { 0x05, "Hello" },
    { 0x06, "OSPF" },
    { 0x07, "IS-IS" },
    { 0x08, "EGP" },
    { 0x09, "BGP" },
    { 0x0a, "IDRP" },
    { 0x0b, "Connected" },
    { 0, NULL}
};

void
eigrp_print(netdissect_options *ndo, register const u_char *pptr, register u_int len)
{
    const struct eigrp_common_header *eigrp_com_header;
    const struct eigrp_tlv_header *eigrp_tlv_header;
    const u_char *tptr,*tlv_tptr;
    u_int tlen,eigrp_tlv_len,eigrp_tlv_type,tlv_tlen, byte_length, bit_length;
    uint8_t prefix[4];

union {
        const struct eigrp_tlv_general_parm_t *eigrp_tlv_general_parm;
        const struct eigrp_tlv_sw_version_t *eigrp_tlv_sw_version;
        const struct eigrp_tlv_ip_int_t *eigrp_tlv_ip_int;
        const struct eigrp_tlv_ip_ext_t *eigrp_tlv_ip_ext;
        const struct eigrp_tlv_at_cable_setup_t *eigrp_tlv_at_cable_setup;
        const struct eigrp_tlv_at_int_t *eigrp_tlv_at_int;
        const struct eigrp_tlv_at_ext_t *eigrp_tlv_at_ext;
    } tlv_ptr;

tptr=pptr;
    eigrp_com_header = (const struct eigrp_common_header *)pptr;
    ND_TCHECK(*eigrp_com_header);

/*
     * Sanity checking of the header.
     */
    if (eigrp_com_header->version != EIGRP_VERSION) {
	ND_PRINT((ndo, "EIGRP version %u packet not supported",eigrp_com_header->version));
	return;
    }

/* in non-verbose mode just lets print the basic Message Type*/
    if (ndo->ndo_vflag < 1) {
        ND_PRINT((ndo, "EIGRP %s, length: %u",
               tok2str(eigrp_opcode_values, "unknown (%u)",eigrp_com_header->opcode),
               len));
        return;
    }

/* ok they seem to want to know everything - lets fully decode it */

if (len < sizeof(struct eigrp_common_header)) {
        ND_PRINT((ndo, "EIGRP %s, length: %u (too short, < %u)",
               tok2str(eigrp_opcode_values, "unknown (%u)",eigrp_com_header->opcode),
               len, (u_int) sizeof(struct eigrp_common_header)));
        return;
    }
    tlen=len-sizeof(struct eigrp_common_header);

/* FIXME print other header info */
    ND_PRINT((ndo, "\n\tEIGRP v%u, opcode: %s (%u), chksum: 0x%04x, Flags: [%s]\n\tseq: 0x%08x, ack: 0x%08x, AS: %u, length: %u",
           eigrp_com_header->version,
           tok2str(eigrp_opcode_values, "unknown, type: %u",eigrp_com_header->opcode),
           eigrp_com_header->opcode,
           EXTRACT_16BITS(&eigrp_com_header->checksum),
           tok2str(eigrp_common_header_flag_values,
                   "none",
                   EXTRACT_32BITS(&eigrp_com_header->flags)),
           EXTRACT_32BITS(&eigrp_com_header->seq),
           EXTRACT_32BITS(&eigrp_com_header->ack),
           EXTRACT_32BITS(&eigrp_com_header->asn),
           tlen));

tptr+=sizeof(const struct eigrp_common_header);

while(tlen>0) {
        /* did we capture enough for fully decoding the object header ? */
        ND_TCHECK2(*tptr, sizeof(struct eigrp_tlv_header));

eigrp_tlv_header = (const struct eigrp_tlv_header *)tptr;
        eigrp_tlv_len=EXTRACT_16BITS(&eigrp_tlv_header->length);
        eigrp_tlv_type=EXTRACT_16BITS(&eigrp_tlv_header->type);

if (eigrp_tlv_len < sizeof(struct eigrp_tlv_header) ||
            eigrp_tlv_len > tlen) {
            print_unknown_data(ndo,tptr+sizeof(struct eigrp_tlv_header),"\n\t    ",tlen);
            return;
        }

ND_PRINT((ndo, "\n\t  %s TLV (0x%04x), length: %u",
               tok2str(eigrp_tlv_values,
                       "Unknown",
                       eigrp_tlv_type),
               eigrp_tlv_type,
               eigrp_tlv_len));

if (eigrp_tlv_len < sizeof(struct eigrp_tlv_header)) {
                ND_PRINT((ndo, " (too short, < %u)",
                        (u_int) sizeof(struct eigrp_tlv_header)));
                break;
        }
        tlv_tptr=tptr+sizeof(struct eigrp_tlv_header);
        tlv_tlen=eigrp_tlv_len-sizeof(struct eigrp_tlv_header);

/* did we capture enough for fully decoding the object ? */
        ND_TCHECK2(*tptr, eigrp_tlv_len);

switch(eigrp_tlv_type) {

case EIGRP_TLV_GENERAL_PARM:
            tlv_ptr.eigrp_tlv_general_parm = (const struct eigrp_tlv_general_parm_t *)tlv_tptr;
            if (tlv_tlen < sizeof(*tlv_ptr.eigrp_tlv_general_parm)) {
                ND_PRINT((ndo, " (too short, < %u)",
                    (u_int) (sizeof(struct eigrp_tlv_header) + sizeof(*tlv_ptr.eigrp_tlv_general_parm))));
                break;
            }

ND_PRINT((ndo, "\n\t    holdtime: %us, k1 %u, k2 %u, k3 %u, k4 %u, k5 %u",
                   EXTRACT_16BITS(tlv_ptr.eigrp_tlv_general_parm->holdtime),
                   tlv_ptr.eigrp_tlv_general_parm->k1,
                   tlv_ptr.eigrp_tlv_general_parm->k2,
                   tlv_ptr.eigrp_tlv_general_parm->k3,
                   tlv_ptr.eigrp_tlv_general_parm->k4,
                   tlv_ptr.eigrp_tlv_general_parm->k5));
            break;

case EIGRP_TLV_SW_VERSION:
            tlv_ptr.eigrp_tlv_sw_version = (const struct eigrp_tlv_sw_version_t *)tlv_tptr;
            if (tlv_tlen < sizeof(*tlv_ptr.eigrp_tlv_sw_version)) {
                ND_PRINT((ndo, " (too short, < %u)",
                    (u_int) (sizeof(struct eigrp_tlv_header) + sizeof(*tlv_ptr.eigrp_tlv_sw_version))));
                break;
            }

ND_PRINT((ndo, "\n\t    IOS version: %u.%u, EIGRP version %u.%u",
                   tlv_ptr.eigrp_tlv_sw_version->ios_major,
                   tlv_ptr.eigrp_tlv_sw_version->ios_minor,
                   tlv_ptr.eigrp_tlv_sw_version->eigrp_major,
                   tlv_ptr.eigrp_tlv_sw_version->eigrp_minor));
            break;

case EIGRP_TLV_IP_INT:
            tlv_ptr.eigrp_tlv_ip_int = (const struct eigrp_tlv_ip_int_t *)tlv_tptr;
            if (tlv_tlen < sizeof(*tlv_ptr.eigrp_tlv_ip_int)) {
                ND_PRINT((ndo, " (too short, < %u)",
                    (u_int) (sizeof(struct eigrp_tlv_header) + sizeof(*tlv_ptr.eigrp_tlv_ip_int))));
                break;
            }

bit_length = tlv_ptr.eigrp_tlv_ip_int->plen;
            if (bit_length > 32) {
                ND_PRINT((ndo, "\n\t    illegal prefix length %u",bit_length));
                break;
            }
            byte_length = (bit_length + 7) / 8; /* variable length encoding */
            memset(prefix, 0, 4);
            ND_TCHECK2(tlv_ptr.eigrp_tlv_ip_int->destination, byte_length);
            memcpy(prefix,&tlv_ptr.eigrp_tlv_ip_int->destination,byte_length);

ND_PRINT((ndo, "\n\t    IPv4 prefix: %15s/%u, nexthop: ",
                   ipaddr_string(ndo, prefix),
                   bit_length));
            if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_int->nexthop) == 0)
                ND_PRINT((ndo, "self"));
            else
                ND_PRINT((ndo, "%s",ipaddr_string(ndo, &tlv_ptr.eigrp_tlv_ip_int->nexthop)));

ND_PRINT((ndo, "\n\t      delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
                   (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_int->delay)/100),
                   EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_int->bandwidth),
                   EXTRACT_24BITS(&tlv_ptr.eigrp_tlv_ip_int->mtu),
                   tlv_ptr.eigrp_tlv_ip_int->hopcount,
                   tlv_ptr.eigrp_tlv_ip_int->reliability,
                   tlv_ptr.eigrp_tlv_ip_int->load));
            break;

case EIGRP_TLV_IP_EXT:
            tlv_ptr.eigrp_tlv_ip_ext = (const struct eigrp_tlv_ip_ext_t *)tlv_tptr;
            if (tlv_tlen < sizeof(*tlv_ptr.eigrp_tlv_ip_ext)) {
                ND_PRINT((ndo, " (too short, < %u)",
                    (u_int) (sizeof(struct eigrp_tlv_header) + sizeof(*tlv_ptr.eigrp_tlv_ip_ext))));
                break;
            }

bit_length = tlv_ptr.eigrp_tlv_ip_ext->plen;
            if (bit_length > 32) {
                ND_PRINT((ndo, "\n\t    illegal prefix length %u",bit_length));
                break;
            }
            byte_length = (bit_length + 7) / 8; /* variable length encoding */
            memset(prefix, 0, 4);
            ND_TCHECK2(tlv_ptr.eigrp_tlv_ip_ext->destination, byte_length);
            memcpy(prefix,&tlv_ptr.eigrp_tlv_ip_ext->destination,byte_length);

ND_PRINT((ndo, "\n\t    IPv4 prefix: %15s/%u, nexthop: ",
                   ipaddr_string(ndo, prefix),
                   bit_length));
            if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_ext->nexthop) == 0)
                ND_PRINT((ndo, "self"));
            else
                ND_PRINT((ndo, "%s",ipaddr_string(ndo, &tlv_ptr.eigrp_tlv_ip_ext->nexthop)));

ND_PRINT((ndo, "\n\t      origin-router %s, origin-as %u, origin-proto %s, flags [0x%02x], tag 0x%08x, metric %u",
                   ipaddr_string(ndo, tlv_ptr.eigrp_tlv_ip_ext->origin_router),
                   EXTRACT_32BITS(tlv_ptr.eigrp_tlv_ip_ext->origin_as),
                   tok2str(eigrp_ext_proto_id_values,"unknown",tlv_ptr.eigrp_tlv_ip_ext->proto_id),
                   tlv_ptr.eigrp_tlv_ip_ext->flags,
                   EXTRACT_32BITS(tlv_ptr.eigrp_tlv_ip_ext->tag),
                   EXTRACT_32BITS(tlv_ptr.eigrp_tlv_ip_ext->metric)));

ND_PRINT((ndo, "\n\t      delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
                   (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_ext->delay)/100),
                   EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_ip_ext->bandwidth),
                   EXTRACT_24BITS(&tlv_ptr.eigrp_tlv_ip_ext->mtu),
                   tlv_ptr.eigrp_tlv_ip_ext->hopcount,
                   tlv_ptr.eigrp_tlv_ip_ext->reliability,
                   tlv_ptr.eigrp_tlv_ip_ext->load));
            break;

case EIGRP_TLV_AT_CABLE_SETUP:
            tlv_ptr.eigrp_tlv_at_cable_setup = (const struct eigrp_tlv_at_cable_setup_t *)tlv_tptr;
            if (tlv_tlen < sizeof(*tlv_ptr.eigrp_tlv_at_cable_setup)) {
                ND_PRINT((ndo, " (too short, < %u)",
                    (u_int) (sizeof(struct eigrp_tlv_header) + sizeof(*tlv_ptr.eigrp_tlv_at_cable_setup))));
                break;
            }

ND_PRINT((ndo, "\n\t    Cable-range: %u-%u, Router-ID %u",
                   EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_cable_setup->cable_start),
                   EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_cable_setup->cable_end),
                   EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_cable_setup->router_id)));
            break;

case EIGRP_TLV_AT_INT:
            tlv_ptr.eigrp_tlv_at_int = (const struct eigrp_tlv_at_int_t *)tlv_tptr;
            if (tlv_tlen < sizeof(*tlv_ptr.eigrp_tlv_at_int)) {
                ND_PRINT((ndo, " (too short, < %u)",
                    (u_int) (sizeof(struct eigrp_tlv_header) + sizeof(*tlv_ptr.eigrp_tlv_at_int))));
                break;
            }

ND_PRINT((ndo, "\n\t     Cable-Range: %u-%u, nexthop: ",
                   EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->cable_start),
                   EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->cable_end)));

if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_int->nexthop) == 0)
                ND_PRINT((ndo, "self"));
            else
                ND_PRINT((ndo, "%u.%u",
                       EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->nexthop),
                       EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_int->nexthop[2])));

ND_PRINT((ndo, "\n\t      delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
                   (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_int->delay)/100),
                   EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_int->bandwidth),
                   EXTRACT_24BITS(&tlv_ptr.eigrp_tlv_at_int->mtu),
                   tlv_ptr.eigrp_tlv_at_int->hopcount,
                   tlv_ptr.eigrp_tlv_at_int->reliability,
                   tlv_ptr.eigrp_tlv_at_int->load));
            break;

case EIGRP_TLV_AT_EXT:
            tlv_ptr.eigrp_tlv_at_ext = (const struct eigrp_tlv_at_ext_t *)tlv_tptr;
            if (tlv_tlen < sizeof(*tlv_ptr.eigrp_tlv_at_ext)) {
                ND_PRINT((ndo, " (too short, < %u)",
                    (u_int) (sizeof(struct eigrp_tlv_header) + sizeof(*tlv_ptr.eigrp_tlv_at_ext))));
                break;
            }

ND_PRINT((ndo, "\n\t     Cable-Range: %u-%u, nexthop: ",
                   EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->cable_start),
                   EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->cable_end)));

if (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_ext->nexthop) == 0)
                ND_PRINT((ndo, "self"));
            else
                ND_PRINT((ndo, "%u.%u",
                       EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->nexthop),
                       EXTRACT_16BITS(&tlv_ptr.eigrp_tlv_at_ext->nexthop[2])));

ND_PRINT((ndo, "\n\t      origin-router %u, origin-as %u, origin-proto %s, flags [0x%02x], tag 0x%08x, metric %u",
                   EXTRACT_32BITS(tlv_ptr.eigrp_tlv_at_ext->origin_router),
                   EXTRACT_32BITS(tlv_ptr.eigrp_tlv_at_ext->origin_as),
                   tok2str(eigrp_ext_proto_id_values,"unknown",tlv_ptr.eigrp_tlv_at_ext->proto_id),
                   tlv_ptr.eigrp_tlv_at_ext->flags,
                   EXTRACT_32BITS(tlv_ptr.eigrp_tlv_at_ext->tag),
                   EXTRACT_16BITS(tlv_ptr.eigrp_tlv_at_ext->metric)));

ND_PRINT((ndo, "\n\t      delay %u ms, bandwidth %u Kbps, mtu %u, hop %u, reliability %u, load %u",
                   (EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_ext->delay)/100),
                   EXTRACT_32BITS(&tlv_ptr.eigrp_tlv_at_ext->bandwidth),
                   EXTRACT_24BITS(&tlv_ptr.eigrp_tlv_at_ext->mtu),
                   tlv_ptr.eigrp_tlv_at_ext->hopcount,
                   tlv_ptr.eigrp_tlv_at_ext->reliability,
                   tlv_ptr.eigrp_tlv_at_ext->load));
            break;

/*
             * FIXME those are the defined TLVs that lack a decoder
             * you are welcome to contribute code ;-)
             */

case EIGRP_TLV_AUTH:
        case EIGRP_TLV_SEQ:
        case EIGRP_TLV_MCAST_SEQ:
        case EIGRP_TLV_IPX_INT:
        case EIGRP_TLV_IPX_EXT:

default:
            if (ndo->ndo_vflag <= 1)
                print_unknown_data(ndo,tlv_tptr,"\n\t    ",tlv_tlen);
            break;
        }
        /* do we want to see an additionally hexdump ? */
        if (ndo->ndo_vflag > 1)
            print_unknown_data(ndo,tptr+sizeof(struct eigrp_tlv_header),"\n\t    ",
                               eigrp_tlv_len-sizeof(struct eigrp_tlv_header));

tptr+=eigrp_tlv_len;
        tlen-=eigrp_tlv_len;
    }
    return;
trunc:
    ND_PRINT((ndo, "\n\t\t packet exceeded snapshot"));
}

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