dist/tcpdump/icmp6.h

   1 /*      $NetBSD$        */
   2
   3 /* @(#) Header: /tcpdump/master/tcpdump/icmp6.h,v 1.16.2.1 2005/09/05 09:29:28 guy Exp (LBL) */
   4 /*      NetBSD: icmp6.h,v 1.13 2000/08/03 16:30:37 itojun Exp   */
   5 /*      $KAME: icmp6.h,v 1.22 2000/08/03 15:25:16 jinmei Exp $  */
   6
   7 /*
   8  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. Neither the name of the project nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 /*
  37  * Copyright (c) 1982, 1986, 1993
  38  *      The Regents of the University of California.  All rights reserved.
  39  *
  40  * Redistribution and use in source and binary forms, with or without
  41  * modification, are permitted provided that the following conditions
  42  * are met:
  43  * 1. Redistributions of source code must retain the above copyright
  44  *    notice, this list of conditions and the following disclaimer.
  45  * 2. Redistributions in binary form must reproduce the above copyright
  46  *    notice, this list of conditions and the following disclaimer in the
  47  *    documentation and/or other materials provided with the distribution.
  48  * 3. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  *
  64  *      @(#)ip_icmp.h   8.1 (Berkeley) 6/10/93
  65  */
  66
  67 #ifndef _NETINET_ICMP6_H_
  68 #define _NETINET_ICMP6_H_
  69
  70 struct icmp6_hdr {
  71         u_int8_t        icmp6_type;     /* type field */
  72         u_int8_t        icmp6_code;     /* code field */
  73         u_int16_t       icmp6_cksum;    /* checksum field */
  74         union {
  75                 u_int32_t       icmp6_un_data32[1]; /* type-specific field */
  76                 u_int16_t       icmp6_un_data16[2]; /* type-specific field */
  77                 u_int8_t        icmp6_un_data8[4];  /* type-specific field */
  78         } icmp6_dataun;
  79 };
  80
  81 #define icmp6_data32    icmp6_dataun.icmp6_un_data32
  82 #define icmp6_data16    icmp6_dataun.icmp6_un_data16
  83 #define icmp6_data8     icmp6_dataun.icmp6_un_data8
  84 #define icmp6_pptr      icmp6_data32[0]         /* parameter prob */
  85 #define icmp6_mtu       icmp6_data32[0]         /* packet too big */
  86 #define icmp6_id        icmp6_data16[0]         /* echo request/reply */
  87 #define icmp6_seq       icmp6_data16[1]         /* echo request/reply */
  88 #define icmp6_maxdelay  icmp6_data16[0]         /* mcast group membership */
  89
  90 #define ICMP6_DST_UNREACH               1       /* dest unreachable, codes: */
  91 #define ICMP6_PACKET_TOO_BIG            2       /* packet too big */
  92 #define ICMP6_TIME_EXCEEDED             3       /* time exceeded, code: */
  93 #define ICMP6_PARAM_PROB                4       /* ip6 header bad */
  94
  95 #define ICMP6_ECHO_REQUEST              128     /* echo service */
  96 #define ICMP6_ECHO_REPLY                129     /* echo reply */
  97 #define ICMP6_MEMBERSHIP_QUERY          130     /* group membership query */
  98 #define MLD6_LISTENER_QUERY             130     /* multicast listener query */
  99 #define ICMP6_MEMBERSHIP_REPORT         131     /* group membership report */
 100 #define MLD6_LISTENER_REPORT            131     /* multicast listener report */
 101 #define ICMP6_MEMBERSHIP_REDUCTION      132     /* group membership termination */
 102 #define MLD6_LISTENER_DONE              132     /* multicast listener done */
 103
 104 #define ND_ROUTER_SOLICIT               133     /* router solicitation */
 105 #define ND_ROUTER_ADVERT                134     /* router advertisement */
 106 #define ND_NEIGHBOR_SOLICIT             135     /* neighbor solicitation */
 107 #define ND_NEIGHBOR_ADVERT              136     /* neighbor advertisement */
 108 #define ND_REDIRECT                     137     /* redirect */
 109
 110 #define ICMP6_ROUTER_RENUMBERING        138     /* router renumbering */
 111
 112 #define ICMP6_WRUREQUEST                139     /* who are you request */
 113 #define ICMP6_WRUREPLY                  140     /* who are you reply */
 114 #define ICMP6_FQDN_QUERY                139     /* FQDN query */
 115 #define ICMP6_FQDN_REPLY                140     /* FQDN reply */
 116 #define ICMP6_NI_QUERY                  139     /* node information request */
 117 #define ICMP6_NI_REPLY                  140     /* node information reply */
 118 #define IND_SOLICIT                     141     /* inverse neighbor solicitation */
 119 #define IND_ADVERT                      142     /* inverse neighbor advertisement */
 120
 121 #define ICMP6_V2_MEMBERSHIP_REPORT      143     /* v2 membership report */
 122 #define MLDV2_LISTENER_REPORT           143     /* v2 multicast listener report */
 123 #define ICMP6_HADISCOV_REQUEST          144
 124 #define ICMP6_HADISCOV_REPLY            145
 125 #define ICMP6_MOBILEPREFIX_SOLICIT      146
 126 #define ICMP6_MOBILEPREFIX_ADVERT       147
 127
 128 #define MLD6_MTRACE_RESP                200     /* mtrace response(to sender) */
 129 #define MLD6_MTRACE                     201     /* mtrace messages */
 130
 131 #define ICMP6_MAXTYPE                   201
 132
 133 #define ICMP6_DST_UNREACH_NOROUTE       0       /* no route to destination */
 134 #define ICMP6_DST_UNREACH_ADMIN         1       /* administratively prohibited */
 135 #define ICMP6_DST_UNREACH_NOTNEIGHBOR   2       /* not a neighbor(obsolete) */
 136 #define ICMP6_DST_UNREACH_BEYONDSCOPE   2       /* beyond scope of source address */
 137 #define ICMP6_DST_UNREACH_ADDR          3       /* address unreachable */
 138 #define ICMP6_DST_UNREACH_NOPORT        4       /* port unreachable */
 139
 140 #define ICMP6_TIME_EXCEED_TRANSIT       0       /* ttl==0 in transit */
 141 #define ICMP6_TIME_EXCEED_REASSEMBLY    1       /* ttl==0 in reass */
 142
 143 #define ICMP6_PARAMPROB_HEADER          0       /* erroneous header field */
 144 #define ICMP6_PARAMPROB_NEXTHEADER      1       /* unrecognized next header */
 145 #define ICMP6_PARAMPROB_OPTION          2       /* unrecognized option */
 146
 147 #define ICMP6_INFOMSG_MASK              0x80    /* all informational messages */
 148
 149 #define ICMP6_NI_SUBJ_IPV6      0       /* Query Subject is an IPv6 address */
 150 #define ICMP6_NI_SUBJ_FQDN      1       /* Query Subject is a Domain name */
 151 #define ICMP6_NI_SUBJ_IPV4      2       /* Query Subject is an IPv4 address */
 152
 153 #define ICMP6_NI_SUCCESS        0       /* node information successful reply */
 154 #define ICMP6_NI_REFUSED        1       /* node information request is refused */
 155 #define ICMP6_NI_UNKNOWN        2       /* unknown Qtype */
 156
 157 #define ICMP6_ROUTER_RENUMBERING_COMMAND  0     /* rr command */
 158 #define ICMP6_ROUTER_RENUMBERING_RESULT   1     /* rr result */
 159 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET   255     /* rr seq num reset */
 160
 161 /* Used in kernel only */
 162 #define ND_REDIRECT_ONLINK      0       /* redirect to an on-link node */
 163 #define ND_REDIRECT_ROUTER      1       /* redirect to a better router */
 164
 165 /*
 166  * Multicast Listener Discovery
 167  */
 168 struct mld6_hdr {
 169         struct icmp6_hdr        mld6_hdr;
 170         struct in6_addr         mld6_addr; /* multicast address */
 171 };
 172
 173 #define mld6_type       mld6_hdr.icmp6_type
 174 #define mld6_code       mld6_hdr.icmp6_code
 175 #define mld6_cksum      mld6_hdr.icmp6_cksum
 176 #define mld6_maxdelay   mld6_hdr.icmp6_data16[0]
 177 #define mld6_reserved   mld6_hdr.icmp6_data16[1]
 178
 179 #define MLD_MINLEN      24
 180 #define MLDV2_MINLEN    28
 181
 182 /*
 183  * Neighbor Discovery
 184  */
 185
 186 struct nd_router_solicit {      /* router solicitation */
 187         struct icmp6_hdr        nd_rs_hdr;
 188         /* could be followed by options */
 189 };
 190
 191 #define nd_rs_type      nd_rs_hdr.icmp6_type
 192 #define nd_rs_code      nd_rs_hdr.icmp6_code
 193 #define nd_rs_cksum     nd_rs_hdr.icmp6_cksum
 194 #define nd_rs_reserved  nd_rs_hdr.icmp6_data32[0]
 195
 196 struct nd_router_advert {       /* router advertisement */
 197         struct icmp6_hdr        nd_ra_hdr;
 198         u_int32_t               nd_ra_reachable;        /* reachable time */
 199         u_int32_t               nd_ra_retransmit;       /* retransmit timer */
 200         /* could be followed by options */
 201 };
 202
 203 #define nd_ra_type              nd_ra_hdr.icmp6_type
 204 #define nd_ra_code              nd_ra_hdr.icmp6_code
 205 #define nd_ra_cksum             nd_ra_hdr.icmp6_cksum
 206 #define nd_ra_curhoplimit       nd_ra_hdr.icmp6_data8[0]
 207 #define nd_ra_flags_reserved    nd_ra_hdr.icmp6_data8[1]
 208 #define ND_RA_FLAG_MANAGED      0x80
 209 #define ND_RA_FLAG_OTHER        0x40
 210 #define ND_RA_FLAG_HOME_AGENT   0x20
 211
 212 /*
 213  * Router preference values based on draft-draves-ipngwg-router-selection-01.
 214  * These are non-standard definitions.
 215  */
 216 #define ND_RA_FLAG_RTPREF_MASK  0x18 /* 00011000 */
 217
 218 #define ND_RA_FLAG_RTPREF_HIGH  0x08 /* 00001000 */
 219 #define ND_RA_FLAG_RTPREF_MEDIUM        0x00 /* 00000000 */
 220 #define ND_RA_FLAG_RTPREF_LOW   0x18 /* 00011000 */
 221 #define ND_RA_FLAG_RTPREF_RSV   0x10 /* 00010000 */
 222
 223 #define nd_ra_router_lifetime   nd_ra_hdr.icmp6_data16[1]
 224
 225 struct nd_neighbor_solicit {    /* neighbor solicitation */
 226         struct icmp6_hdr        nd_ns_hdr;
 227         struct in6_addr         nd_ns_target;   /*target address */
 228         /* could be followed by options */
 229 };
 230
 231 #define nd_ns_type              nd_ns_hdr.icmp6_type
 232 #define nd_ns_code              nd_ns_hdr.icmp6_code
 233 #define nd_ns_cksum             nd_ns_hdr.icmp6_cksum
 234 #define nd_ns_reserved          nd_ns_hdr.icmp6_data32[0]
 235
 236 struct nd_neighbor_advert {     /* neighbor advertisement */
 237         struct icmp6_hdr        nd_na_hdr;
 238         struct in6_addr         nd_na_target;   /* target address */
 239         /* could be followed by options */
 240 };
 241
 242 #define nd_na_type              nd_na_hdr.icmp6_type
 243 #define nd_na_code              nd_na_hdr.icmp6_code
 244 #define nd_na_cksum             nd_na_hdr.icmp6_cksum
 245 #define nd_na_flags_reserved    nd_na_hdr.icmp6_data32[0]
 246
 247 #define ND_NA_FLAG_ROUTER               0x80000000
 248 #define ND_NA_FLAG_SOLICITED            0x40000000
 249 #define ND_NA_FLAG_OVERRIDE             0x20000000
 250
 251 struct nd_redirect {            /* redirect */
 252         struct icmp6_hdr        nd_rd_hdr;
 253         struct in6_addr         nd_rd_target;   /* target address */
 254         struct in6_addr         nd_rd_dst;      /* destination address */
 255         /* could be followed by options */
 256 };
 257
 258 #define nd_rd_type              nd_rd_hdr.icmp6_type
 259 #define nd_rd_code              nd_rd_hdr.icmp6_code
 260 #define nd_rd_cksum             nd_rd_hdr.icmp6_cksum
 261 #define nd_rd_reserved          nd_rd_hdr.icmp6_data32[0]
 262
 263 struct nd_opt_hdr {             /* Neighbor discovery option header */
 264         u_int8_t        nd_opt_type;
 265         u_int8_t        nd_opt_len;
 266         /* followed by option specific data*/
 267 };
 268
 269 #define ND_OPT_SOURCE_LINKADDR          1
 270 #define ND_OPT_TARGET_LINKADDR          2
 271 #define ND_OPT_PREFIX_INFORMATION       3
 272 #define ND_OPT_REDIRECTED_HEADER        4
 273 #define ND_OPT_MTU                      5
 274 #define ND_OPT_ADVINTERVAL              7
 275 #define ND_OPT_HOMEAGENT_INFO           8
 276 #define ND_OPT_ROUTE_INFO               9       /* draft-ietf-ipngwg-router-preference, not officially assigned yet */
 277
 278
 279 struct nd_opt_prefix_info {     /* prefix information */
 280         u_int8_t        nd_opt_pi_type;
 281         u_int8_t        nd_opt_pi_len;
 282         u_int8_t        nd_opt_pi_prefix_len;
 283         u_int8_t        nd_opt_pi_flags_reserved;
 284         u_int8_t        nd_opt_pi_valid_time[4];
 285         u_int8_t        nd_opt_pi_preferred_time[4];
 286         u_int8_t        nd_opt_pi_reserved2[4];
 287         struct in6_addr nd_opt_pi_prefix;
 288 };
 289
 290 #define ND_OPT_PI_FLAG_ONLINK           0x80
 291 #define ND_OPT_PI_FLAG_AUTO             0x40
 292 #define ND_OPT_PI_FLAG_ROUTER           0x20    /*2292bis*/
 293
 294 struct nd_opt_rd_hdr {         /* redirected header */
 295         u_int8_t        nd_opt_rh_type;
 296         u_int8_t        nd_opt_rh_len;
 297         u_int16_t       nd_opt_rh_reserved1;
 298         u_int32_t       nd_opt_rh_reserved2;
 299         /* followed by IP header and data */
 300 };
 301
 302 struct nd_opt_mtu {             /* MTU option */
 303         u_int8_t        nd_opt_mtu_type;
 304         u_int8_t        nd_opt_mtu_len;
 305         u_int16_t       nd_opt_mtu_reserved;
 306         u_int32_t       nd_opt_mtu_mtu;
 307 };
 308
 309 struct nd_opt_advinterval {     /* Advertisement interval option */
 310         u_int8_t        nd_opt_adv_type;
 311         u_int8_t        nd_opt_adv_len;
 312         u_int16_t       nd_opt_adv_reserved;
 313         u_int32_t       nd_opt_adv_interval;
 314 };
 315
 316 struct nd_opt_homeagent_info {  /* Home Agent info */
 317         u_int8_t        nd_opt_hai_type;
 318         u_int8_t        nd_opt_hai_len;
 319         u_int16_t       nd_opt_hai_reserved;
 320         int16_t         nd_opt_hai_preference;
 321         u_int16_t       nd_opt_hai_lifetime;
 322 };
 323
 324 struct nd_opt_route_info {      /* route info */
 325         u_int8_t        nd_opt_rti_type;
 326         u_int8_t        nd_opt_rti_len;
 327         u_int8_t        nd_opt_rti_prefixlen;
 328         u_int8_t        nd_opt_rti_flags;
 329         u_int32_t       nd_opt_rti_lifetime;
 330         /* prefix follows */
 331 };
 332
 333 /*
 334  * icmp6 namelookup
 335  */
 336
 337 struct icmp6_namelookup {
 338         struct icmp6_hdr        icmp6_nl_hdr;
 339         u_int8_t        icmp6_nl_nonce[8];
 340         int32_t         icmp6_nl_ttl;
 341 #if 0
 342         u_int8_t        icmp6_nl_len;
 343         u_int8_t        icmp6_nl_name[3];
 344 #endif
 345         /* could be followed by options */
 346 };
 347
 348 /*
 349  * icmp6 node information
 350  */
 351 struct icmp6_nodeinfo {
 352         struct icmp6_hdr icmp6_ni_hdr;
 353         u_int8_t icmp6_ni_nonce[8];
 354         /* could be followed by reply data */
 355 };
 356
 357 #define ni_type         icmp6_ni_hdr.icmp6_type
 358 #define ni_code         icmp6_ni_hdr.icmp6_code
 359 #define ni_cksum        icmp6_ni_hdr.icmp6_cksum
 360 #define ni_qtype        icmp6_ni_hdr.icmp6_data16[0]
 361 #define ni_flags        icmp6_ni_hdr.icmp6_data16[1]
 362
 363 #define NI_QTYPE_NOOP           0 /* NOOP  */
 364 #define NI_QTYPE_SUPTYPES       1 /* Supported Qtypes */
 365 #define NI_QTYPE_FQDN           2 /* FQDN (draft 04) */
 366 #define NI_QTYPE_DNSNAME        2 /* DNS Name */
 367 #define NI_QTYPE_NODEADDR       3 /* Node Addresses */
 368 #define NI_QTYPE_IPV4ADDR       4 /* IPv4 Addresses */
 369
 370 /* network endian */
 371 #define NI_SUPTYPE_FLAG_COMPRESS        ((u_int16_t)htons(0x1))
 372 #define NI_FQDN_FLAG_VALIDTTL           ((u_int16_t)htons(0x1))
 373
 374 /* network endian */
 375 #define NI_NODEADDR_FLAG_TRUNCATE       ((u_int16_t)htons(0x1))
 376 #define NI_NODEADDR_FLAG_ALL            ((u_int16_t)htons(0x2))
 377 #define NI_NODEADDR_FLAG_COMPAT         ((u_int16_t)htons(0x4))
 378 #define NI_NODEADDR_FLAG_LINKLOCAL      ((u_int16_t)htons(0x8))
 379 #define NI_NODEADDR_FLAG_SITELOCAL      ((u_int16_t)htons(0x10))
 380 #define NI_NODEADDR_FLAG_GLOBAL         ((u_int16_t)htons(0x20))
 381 #define NI_NODEADDR_FLAG_ANYCAST        ((u_int16_t)htons(0x40)) /* just experimental. not in spec */
 382
 383 struct ni_reply_fqdn {
 384         u_int32_t ni_fqdn_ttl;  /* TTL */
 385         u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
 386         u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
 387 };
 388
 389 /*
 390  * Router Renumbering. as router-renum-08.txt
 391  */
 392 struct icmp6_router_renum {     /* router renumbering header */
 393         struct icmp6_hdr        rr_hdr;
 394         u_int8_t        rr_segnum;
 395         u_int8_t        rr_flags;
 396         u_int16_t       rr_maxdelay;
 397         u_int32_t       rr_reserved;
 398 };
 399 #define ICMP6_RR_FLAGS_TEST             0x80
 400 #define ICMP6_RR_FLAGS_REQRESULT        0x40
 401 #define ICMP6_RR_FLAGS_FORCEAPPLY       0x20
 402 #define ICMP6_RR_FLAGS_SPECSITE         0x10
 403 #define ICMP6_RR_FLAGS_PREVDONE         0x08
 404
 405 #define rr_type         rr_hdr.icmp6_type
 406 #define rr_code         rr_hdr.icmp6_code
 407 #define rr_cksum        rr_hdr.icmp6_cksum
 408 #define rr_seqnum       rr_hdr.icmp6_data32[0]
 409
 410 struct rr_pco_match {           /* match prefix part */
 411         u_int8_t        rpm_code;
 412         u_int8_t        rpm_len;
 413         u_int8_t        rpm_ordinal;
 414         u_int8_t        rpm_matchlen;
 415         u_int8_t        rpm_minlen;
 416         u_int8_t        rpm_maxlen;
 417         u_int16_t       rpm_reserved;
 418         struct  in6_addr        rpm_prefix;
 419 };
 420
 421 #define RPM_PCO_ADD             1
 422 #define RPM_PCO_CHANGE          2
 423 #define RPM_PCO_SETGLOBAL       3
 424 #define RPM_PCO_MAX             4
 425
 426 struct rr_pco_use {             /* use prefix part */
 427         u_int8_t        rpu_uselen;
 428         u_int8_t        rpu_keeplen;
 429         u_int8_t        rpu_ramask;
 430         u_int8_t        rpu_raflags;
 431         u_int32_t       rpu_vltime;
 432         u_int32_t       rpu_pltime;
 433         u_int32_t       rpu_flags;
 434         struct  in6_addr rpu_prefix;
 435 };
 436 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK  0x80
 437 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO    0x40
 438
 439 /* network endian */
 440 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME     ((u_int32_t)htonl(0x80000000))
 441 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME     ((u_int32_t)htonl(0x40000000))
 442
 443 struct rr_result {              /* router renumbering result message */
 444         u_int16_t       rrr_flags;
 445         u_int8_t        rrr_ordinal;
 446         u_int8_t        rrr_matchedlen;
 447         u_int32_t       rrr_ifid;
 448         struct  in6_addr rrr_prefix;
 449 };
 450 /* network endian */
 451 #define ICMP6_RR_RESULT_FLAGS_OOB               ((u_int16_t)htons(0x0002))
 452 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN         ((u_int16_t)htons(0x0001))
 453
 454 #endif /* not _NETINET_ICMP6_H_ */