The Tcpdump Group git mirrors - tcpdump/blob - print-aodv.c

   1 /*
   2  * Copyright (c) 2003 Bruce M. Simpson <bms@spc.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *        This product includes software developed by Bruce M. Simpson.
  16  * 4. Neither the name of Bruce M. Simpson nor the names of co-
  17  *    contributors may be used to endorse or promote products derived
  18  *    from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY Bruce M. Simpson AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL Bruce M. Simpson OR CONTRIBUTORS
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 /* \summary: Ad hoc On-Demand Distance Vector (AODV) Routing printer */
  34
  35 #ifdef HAVE_CONFIG_H
  36 #include "config.h"
  37 #endif
  38
  39 #include <netdissect-stdinc.h>
  40
  41 #include "netdissect.h"
  42 #include "addrtoname.h"
  43 #include "extract.h"
  44
  45
  46 struct aodv_rreq {
  47         uint8_t         rreq_type;      /* AODV message type (1) */
  48         uint8_t         rreq_flags;     /* various flags */
  49         uint8_t         rreq_zero0;     /* reserved, set to zero */
  50         uint8_t         rreq_hops;      /* number of hops from originator */
  51         uint32_t        rreq_id;        /* request ID */
  52         uint32_t        rreq_da;        /* destination IPv4 address */
  53         uint32_t        rreq_ds;        /* destination sequence number */
  54         uint32_t        rreq_oa;        /* originator IPv4 address */
  55         uint32_t        rreq_os;        /* originator sequence number */
  56 };
  57 struct aodv_rreq6 {
  58         uint8_t         rreq_type;      /* AODV message type (1) */
  59         uint8_t         rreq_flags;     /* various flags */
  60         uint8_t         rreq_zero0;     /* reserved, set to zero */
  61         uint8_t         rreq_hops;      /* number of hops from originator */
  62         uint32_t        rreq_id;        /* request ID */
  63         struct in6_addr rreq_da;        /* destination IPv6 address */
  64         uint32_t        rreq_ds;        /* destination sequence number */
  65         struct in6_addr rreq_oa;        /* originator IPv6 address */
  66         uint32_t        rreq_os;        /* originator sequence number */
  67 };
  68 struct aodv_rreq6_draft_01 {
  69         uint8_t         rreq_type;      /* AODV message type (16) */
  70         uint8_t         rreq_flags;     /* various flags */
  71         uint8_t         rreq_zero0;     /* reserved, set to zero */
  72         uint8_t         rreq_hops;      /* number of hops from originator */
  73         uint32_t        rreq_id;        /* request ID */
  74         uint32_t        rreq_ds;        /* destination sequence number */
  75         uint32_t        rreq_os;        /* originator sequence number */
  76         struct in6_addr rreq_da;        /* destination IPv6 address */
  77         struct in6_addr rreq_oa;        /* originator IPv6 address */
  78 };
  79
  80 #define RREQ_JOIN       0x80            /* join (reserved for multicast */
  81 #define RREQ_REPAIR     0x40            /* repair (reserved for multicast */
  82 #define RREQ_GRAT       0x20            /* gratuitous RREP */
  83 #define RREQ_DEST       0x10            /* destination only */
  84 #define RREQ_UNKNOWN    0x08            /* unknown destination sequence num */
  85 #define RREQ_FLAGS_MASK 0xF8            /* mask for rreq_flags */
  86
  87 struct aodv_rrep {
  88         uint8_t         rrep_type;      /* AODV message type (2) */
  89         uint8_t         rrep_flags;     /* various flags */
  90         uint8_t         rrep_ps;        /* prefix size */
  91         uint8_t         rrep_hops;      /* number of hops from o to d */
  92         uint32_t        rrep_da;        /* destination IPv4 address */
  93         uint32_t        rrep_ds;        /* destination sequence number */
  94         uint32_t        rrep_oa;        /* originator IPv4 address */
  95         uint32_t        rrep_life;      /* lifetime of this route */
  96 };
  97 struct aodv_rrep6 {
  98         uint8_t         rrep_type;      /* AODV message type (2) */
  99         uint8_t         rrep_flags;     /* various flags */
 100         uint8_t         rrep_ps;        /* prefix size */
 101         uint8_t         rrep_hops;      /* number of hops from o to d */
 102         struct in6_addr rrep_da;        /* destination IPv6 address */
 103         uint32_t        rrep_ds;        /* destination sequence number */
 104         struct in6_addr rrep_oa;        /* originator IPv6 address */
 105         uint32_t        rrep_life;      /* lifetime of this route */
 106 };
 107 struct aodv_rrep6_draft_01 {
 108         uint8_t         rrep_type;      /* AODV message type (17) */
 109         uint8_t         rrep_flags;     /* various flags */
 110         uint8_t         rrep_ps;        /* prefix size */
 111         uint8_t         rrep_hops;      /* number of hops from o to d */
 112         uint32_t        rrep_ds;        /* destination sequence number */
 113         struct in6_addr rrep_da;        /* destination IPv6 address */
 114         struct in6_addr rrep_oa;        /* originator IPv6 address */
 115         uint32_t        rrep_life;      /* lifetime of this route */
 116 };
 117
 118 #define RREP_REPAIR             0x80    /* repair (reserved for multicast */
 119 #define RREP_ACK                0x40    /* acknowledgement required */
 120 #define RREP_FLAGS_MASK         0xC0    /* mask for rrep_flags */
 121 #define RREP_PREFIX_MASK        0x1F    /* mask for prefix size */
 122
 123 struct rerr_unreach {
 124         uint32_t        u_da;   /* IPv4 address */
 125         uint32_t        u_ds;   /* sequence number */
 126 };
 127 struct rerr_unreach6 {
 128         struct in6_addr u_da;   /* IPv6 address */
 129         uint32_t        u_ds;   /* sequence number */
 130 };
 131 struct rerr_unreach6_draft_01 {
 132         struct in6_addr u_da;   /* IPv6 address */
 133         uint32_t        u_ds;   /* sequence number */
 134 };
 135
 136 struct aodv_rerr {
 137         uint8_t         rerr_type;      /* AODV message type (3 or 18) */
 138         uint8_t         rerr_flags;     /* various flags */
 139         uint8_t         rerr_zero0;     /* reserved, set to zero */
 140         uint8_t         rerr_dc;        /* destination count */
 141 };
 142
 143 #define RERR_NODELETE           0x80    /* don't delete the link */
 144 #define RERR_FLAGS_MASK         0x80    /* mask for rerr_flags */
 145
 146 struct aodv_rrep_ack {
 147         uint8_t         ra_type;
 148         uint8_t         ra_zero0;
 149 };
 150
 151 #define AODV_RREQ               1       /* route request */
 152 #define AODV_RREP               2       /* route response */
 153 #define AODV_RERR               3       /* error report */
 154 #define AODV_RREP_ACK           4       /* route response acknowledgement */
 155
 156 #define AODV_V6_DRAFT_01_RREQ           16      /* IPv6 route request */
 157 #define AODV_V6_DRAFT_01_RREP           17      /* IPv6 route response */
 158 #define AODV_V6_DRAFT_01_RERR           18      /* IPv6 error report */
 159 #define AODV_V6_DRAFT_01_RREP_ACK       19      /* IPV6 route response acknowledgment */
 160
 161 struct aodv_ext {
 162         uint8_t         type;           /* extension type */
 163         uint8_t         length;         /* extension length */
 164 };
 165
 166 struct aodv_hello {
 167         struct  aodv_ext        eh;             /* extension header */
 168         uint8_t                 interval[4];    /* expect my next hello in
 169                                                  * (n) ms
 170                                                  * NOTE: this is not aligned */
 171 };
 172
 173 #define AODV_EXT_HELLO  1
 174
 175 static void
 176 aodv_extension(netdissect_options *ndo,
 177                const struct aodv_ext *ep, u_int length)
 178 {
 179         const struct aodv_hello *ah;
 180
 181         switch (ep->type) {
 182         case AODV_EXT_HELLO:
 183                 ah = (const struct aodv_hello *)(const void *)ep;
 184                 ND_TCHECK(*ah);
 185                 if (length < sizeof(struct aodv_hello))
 186                         goto trunc;
 187                 ND_PRINT((ndo, "\n\text HELLO %ld ms",
 188                     (unsigned long)EXTRACT_32BITS(&ah->interval)));
 189                 break;
 190
 191         default:
 192                 ND_PRINT((ndo, "\n\text %u %u", ep->type, ep->length));
 193                 break;
 194         }
 195         return;
 196
 197 trunc:
 198         ND_PRINT((ndo, " [|hello]"));
 199 }
 200
 201 static void
 202 aodv_rreq(netdissect_options *ndo, const u_char *dat, u_int length)
 203 {
 204         u_int i;
 205         const struct aodv_rreq *ap = (const struct aodv_rreq *)dat;
 206
 207         ND_TCHECK(*ap);
 208         if (length < sizeof(*ap))
 209                 goto trunc;
 210         ND_PRINT((ndo, " rreq %u %s%s%s%s%shops %u id 0x%08lx\n"
 211             "\tdst %s seq %lu src %s seq %lu", length,
 212             ap->rreq_type & RREQ_JOIN ? "[J]" : "",
 213             ap->rreq_type & RREQ_REPAIR ? "[R]" : "",
 214             ap->rreq_type & RREQ_GRAT ? "[G]" : "",
 215             ap->rreq_type & RREQ_DEST ? "[D]" : "",
 216             ap->rreq_type & RREQ_UNKNOWN ? "[U] " : " ",
 217             ap->rreq_hops,
 218             (unsigned long)EXTRACT_32BITS(&ap->rreq_id),
 219             ipaddr_string(ndo, &ap->rreq_da),
 220             (unsigned long)EXTRACT_32BITS(&ap->rreq_ds),
 221             ipaddr_string(ndo, &ap->rreq_oa),
 222             (unsigned long)EXTRACT_32BITS(&ap->rreq_os)));
 223         i = length - sizeof(*ap);
 224         if (i >= sizeof(struct aodv_ext))
 225                 aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
 226         return;
 227
 228 trunc:
 229         ND_PRINT((ndo, " [|rreq"));
 230 }
 231
 232 static void
 233 aodv_rrep(netdissect_options *ndo, const u_char *dat, u_int length)
 234 {
 235         u_int i;
 236         const struct aodv_rrep *ap = (const struct aodv_rrep *)dat;
 237
 238         ND_TCHECK(*ap);
 239         if (length < sizeof(*ap))
 240                 goto trunc;
 241         ND_PRINT((ndo, " rrep %u %s%sprefix %u hops %u\n"
 242             "\tdst %s dseq %lu src %s %lu ms", length,
 243             ap->rrep_type & RREP_REPAIR ? "[R]" : "",
 244             ap->rrep_type & RREP_ACK ? "[A] " : " ",
 245             ap->rrep_ps & RREP_PREFIX_MASK,
 246             ap->rrep_hops,
 247             ipaddr_string(ndo, &ap->rrep_da),
 248             (unsigned long)EXTRACT_32BITS(&ap->rrep_ds),
 249             ipaddr_string(ndo, &ap->rrep_oa),
 250             (unsigned long)EXTRACT_32BITS(&ap->rrep_life)));
 251         i = length - sizeof(*ap);
 252         if (i >= sizeof(struct aodv_ext))
 253                 aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
 254         return;
 255
 256 trunc:
 257         ND_PRINT((ndo, " [|rreq"));
 258 }
 259
 260 static void
 261 aodv_rerr(netdissect_options *ndo, const u_char *dat, u_int length)
 262 {
 263         u_int i, dc;
 264         const struct aodv_rerr *ap = (const struct aodv_rerr *)dat;
 265         const struct rerr_unreach *dp;
 266
 267         ND_TCHECK(*ap);
 268         if (length < sizeof(*ap))
 269                 goto trunc;
 270         ND_PRINT((ndo, " rerr %s [items %u] [%u]:",
 271             ap->rerr_flags & RERR_NODELETE ? "[D]" : "",
 272             ap->rerr_dc, length));
 273         dp = (const struct rerr_unreach *)(dat + sizeof(*ap));
 274         i = length - sizeof(*ap);
 275         for (dc = ap->rerr_dc; dc != 0; dc--) {
 276                 ND_TCHECK(*dp);
 277                 if (i < sizeof(*dp))
 278                         goto trunc;
 279                 ND_PRINT((ndo, " {%s}(%ld)", ipaddr_string(ndo, &dp->u_da),
 280                     (unsigned long)EXTRACT_32BITS(&dp->u_ds)));
 281                 dp++;
 282                 i -= sizeof(*dp);
 283         }
 284         return;
 285
 286 trunc:
 287         ND_PRINT((ndo, "[|rerr]"));
 288 }
 289
 290 static void
 291 aodv_v6_rreq(netdissect_options *ndo, const u_char *dat, u_int length)
 292 {
 293         u_int i;
 294         const struct aodv_rreq6 *ap = (const struct aodv_rreq6 *)dat;
 295
 296         ND_TCHECK(*ap);
 297         if (length < sizeof(*ap))
 298                 goto trunc;
 299         ND_PRINT((ndo, " v6 rreq %u %s%s%s%s%shops %u id 0x%08lx\n"
 300             "\tdst %s seq %lu src %s seq %lu", length,
 301             ap->rreq_type & RREQ_JOIN ? "[J]" : "",
 302             ap->rreq_type & RREQ_REPAIR ? "[R]" : "",
 303             ap->rreq_type & RREQ_GRAT ? "[G]" : "",
 304             ap->rreq_type & RREQ_DEST ? "[D]" : "",
 305             ap->rreq_type & RREQ_UNKNOWN ? "[U] " : " ",
 306             ap->rreq_hops,
 307             (unsigned long)EXTRACT_32BITS(&ap->rreq_id),
 308             ip6addr_string(ndo, &ap->rreq_da),
 309             (unsigned long)EXTRACT_32BITS(&ap->rreq_ds),
 310             ip6addr_string(ndo, &ap->rreq_oa),
 311             (unsigned long)EXTRACT_32BITS(&ap->rreq_os)));
 312         i = length - sizeof(*ap);
 313         if (i >= sizeof(struct aodv_ext))
 314                 aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
 315         return;
 316
 317 trunc:
 318         ND_PRINT((ndo, " [|rreq"));
 319 }
 320
 321 static void
 322 aodv_v6_rrep(netdissect_options *ndo, const u_char *dat, u_int length)
 323 {
 324         u_int i;
 325         const struct aodv_rrep6 *ap = (const struct aodv_rrep6 *)dat;
 326
 327         ND_TCHECK(*ap);
 328         if (length < sizeof(*ap))
 329                 goto trunc;
 330         ND_PRINT((ndo, " rrep %u %s%sprefix %u hops %u\n"
 331            "\tdst %s dseq %lu src %s %lu ms", length,
 332             ap->rrep_type & RREP_REPAIR ? "[R]" : "",
 333             ap->rrep_type & RREP_ACK ? "[A] " : " ",
 334             ap->rrep_ps & RREP_PREFIX_MASK,
 335             ap->rrep_hops,
 336             ip6addr_string(ndo, &ap->rrep_da),
 337             (unsigned long)EXTRACT_32BITS(&ap->rrep_ds),
 338             ip6addr_string(ndo, &ap->rrep_oa),
 339             (unsigned long)EXTRACT_32BITS(&ap->rrep_life)));
 340         i = length - sizeof(*ap);
 341         if (i >= sizeof(struct aodv_ext))
 342                 aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
 343         return;
 344
 345 trunc:
 346         ND_PRINT((ndo, " [|rreq"));
 347 }
 348
 349 static void
 350 aodv_v6_rerr(netdissect_options *ndo, const u_char *dat, u_int length)
 351 {
 352         u_int i, dc;
 353         const struct aodv_rerr *ap = (const struct aodv_rerr *)dat;
 354         const struct rerr_unreach6 *dp6;
 355
 356         ND_TCHECK(*ap);
 357         if (length < sizeof(*ap))
 358                 goto trunc;
 359         ND_PRINT((ndo, " rerr %s [items %u] [%u]:",
 360             ap->rerr_flags & RERR_NODELETE ? "[D]" : "",
 361             ap->rerr_dc, length));
 362         dp6 = (const struct rerr_unreach6 *)(const void *)(ap + 1);
 363         i = length - sizeof(*ap);
 364         for (dc = ap->rerr_dc; dc != 0; dc--) {
 365                 ND_TCHECK(*dp6);
 366                 if (i < sizeof(*dp6))
 367                         goto trunc;
 368                 ND_PRINT((ndo, " {%s}(%ld)", ip6addr_string(ndo, &dp6->u_da),
 369                     (unsigned long)EXTRACT_32BITS(&dp6->u_ds)));
 370                 dp6++;
 371                 i -= sizeof(*dp6);
 372         }
 373         return;
 374
 375 trunc:
 376         ND_PRINT((ndo, "[|rerr]"));
 377 }
 378
 379 static void
 380 aodv_v6_draft_01_rreq(netdissect_options *ndo, const u_char *dat, u_int length)
 381 {
 382         u_int i;
 383         const struct aodv_rreq6_draft_01 *ap = (const struct aodv_rreq6_draft_01 *)dat;
 384
 385         ND_TCHECK(*ap);
 386         if (length < sizeof(*ap))
 387                 goto trunc;
 388         ND_PRINT((ndo, " rreq %u %s%s%s%s%shops %u id 0x%08lx\n"
 389             "\tdst %s seq %lu src %s seq %lu", length,
 390             ap->rreq_type & RREQ_JOIN ? "[J]" : "",
 391             ap->rreq_type & RREQ_REPAIR ? "[R]" : "",
 392             ap->rreq_type & RREQ_GRAT ? "[G]" : "",
 393             ap->rreq_type & RREQ_DEST ? "[D]" : "",
 394             ap->rreq_type & RREQ_UNKNOWN ? "[U] " : " ",
 395             ap->rreq_hops,
 396             (unsigned long)EXTRACT_32BITS(&ap->rreq_id),
 397             ip6addr_string(ndo, &ap->rreq_da),
 398             (unsigned long)EXTRACT_32BITS(&ap->rreq_ds),
 399             ip6addr_string(ndo, &ap->rreq_oa),
 400             (unsigned long)EXTRACT_32BITS(&ap->rreq_os)));
 401         i = length - sizeof(*ap);
 402         if (i >= sizeof(struct aodv_ext))
 403                 aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
 404         return;
 405
 406 trunc:
 407         ND_PRINT((ndo, " [|rreq"));
 408 }
 409
 410 static void
 411 aodv_v6_draft_01_rrep(netdissect_options *ndo, const u_char *dat, u_int length)
 412 {
 413         u_int i;
 414         const struct aodv_rrep6_draft_01 *ap = (const struct aodv_rrep6_draft_01 *)dat;
 415
 416         ND_TCHECK(*ap);
 417         if (length < sizeof(*ap))
 418                 goto trunc;
 419         ND_PRINT((ndo, " rrep %u %s%sprefix %u hops %u\n"
 420            "\tdst %s dseq %lu src %s %lu ms", length,
 421             ap->rrep_type & RREP_REPAIR ? "[R]" : "",
 422             ap->rrep_type & RREP_ACK ? "[A] " : " ",
 423             ap->rrep_ps & RREP_PREFIX_MASK,
 424             ap->rrep_hops,
 425             ip6addr_string(ndo, &ap->rrep_da),
 426             (unsigned long)EXTRACT_32BITS(&ap->rrep_ds),
 427             ip6addr_string(ndo, &ap->rrep_oa),
 428             (unsigned long)EXTRACT_32BITS(&ap->rrep_life)));
 429         i = length - sizeof(*ap);
 430         if (i >= sizeof(struct aodv_ext))
 431                 aodv_extension(ndo, (const struct aodv_ext *)(dat + sizeof(*ap)), i);
 432         return;
 433
 434 trunc:
 435         ND_PRINT((ndo, " [|rreq"));
 436 }
 437
 438 static void
 439 aodv_v6_draft_01_rerr(netdissect_options *ndo, const u_char *dat, u_int length)
 440 {
 441         u_int i, dc;
 442         const struct aodv_rerr *ap = (const struct aodv_rerr *)dat;
 443         const struct rerr_unreach6_draft_01 *dp6;
 444
 445         ND_TCHECK(*ap);
 446         if (length < sizeof(*ap))
 447                 goto trunc;
 448         ND_PRINT((ndo, " rerr %s [items %u] [%u]:",
 449             ap->rerr_flags & RERR_NODELETE ? "[D]" : "",
 450             ap->rerr_dc, length));
 451         dp6 = (const struct rerr_unreach6_draft_01 *)(const void *)(ap + 1);
 452         i = length - sizeof(*ap);
 453         for (dc = ap->rerr_dc; dc != 0; dc--) {
 454                 ND_TCHECK(*dp6);
 455                 if (i < sizeof(*dp6))
 456                         goto trunc;
 457                 ND_PRINT((ndo, " {%s}(%ld)", ip6addr_string(ndo, &dp6->u_da),
 458                     (unsigned long)EXTRACT_32BITS(&dp6->u_ds)));
 459                 dp6++;
 460                 i -= sizeof(*dp6);
 461         }
 462         return;
 463
 464 trunc:
 465         ND_PRINT((ndo, "[|rerr]"));
 466 }
 467
 468 void
 469 aodv_print(netdissect_options *ndo,
 470            const u_char *dat, u_int length, int is_ip6)
 471 {
 472         uint8_t msg_type;
 473
 474         /*
 475          * The message type is the first byte; make sure we have it
 476          * and then fetch it.
 477          */
 478         ND_TCHECK(*dat);
 479         msg_type = *dat;
 480         ND_PRINT((ndo, " aodv"));
 481
 482         switch (msg_type) {
 483
 484         case AODV_RREQ:
 485                 if (is_ip6)
 486                         aodv_v6_rreq(ndo, dat, length);
 487                 else
 488                         aodv_rreq(ndo, dat, length);
 489                 break;
 490
 491         case AODV_RREP:
 492                 if (is_ip6)
 493                         aodv_v6_rrep(ndo, dat, length);
 494                 else
 495                         aodv_rrep(ndo, dat, length);
 496                 break;
 497
 498         case AODV_RERR:
 499                 if (is_ip6)
 500                         aodv_v6_rerr(ndo, dat, length);
 501                 else
 502                         aodv_rerr(ndo, dat, length);
 503                 break;
 504
 505         case AODV_RREP_ACK:
 506                 ND_PRINT((ndo, " rrep-ack %u", length));
 507                 break;
 508
 509         case AODV_V6_DRAFT_01_RREQ:
 510                 aodv_v6_draft_01_rreq(ndo, dat, length);
 511                 break;
 512
 513         case AODV_V6_DRAFT_01_RREP:
 514                 aodv_v6_draft_01_rrep(ndo, dat, length);
 515                 break;
 516
 517         case AODV_V6_DRAFT_01_RERR:
 518                 aodv_v6_draft_01_rerr(ndo, dat, length);
 519                 break;
 520
 521         case AODV_V6_DRAFT_01_RREP_ACK:
 522                 ND_PRINT((ndo, " rrep-ack %u", length));
 523                 break;
 524
 525         default:
 526                 ND_PRINT((ndo, " type %u %u", msg_type, length));
 527         }
 528         return;
 529
 530 trunc:
 531         ND_PRINT((ndo, " [|aodv]"));
 532 }