mirror of
https://github.com/the-tcpdump-group/tcpdump.git
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8c31bfcebe
The most notable difference between RFC5006 and RFC6106 is the addition of DNSSL RA option. This commit adds DNSSL handling code to make tcpdump fully RFC6106-aware. This code has been tested against RA packets generated by Quagga and radvd.
474 lines
16 KiB
C
474 lines
16 KiB
C
/* @(#) $Header: /tcpdump/master/tcpdump/icmp6.h,v 1.18 2007-08-29 02:31:44 mcr Exp $ (LBL) */
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/* NetBSD: icmp6.h,v 1.13 2000/08/03 16:30:37 itojun Exp */
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/* $KAME: icmp6.h,v 1.22 2000/08/03 15:25:16 jinmei Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93
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*/
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#ifndef _NETINET_ICMP6_H_
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#define _NETINET_ICMP6_H_
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struct icmp6_hdr {
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u_int8_t icmp6_type; /* type field */
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u_int8_t icmp6_code; /* code field */
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u_int16_t icmp6_cksum; /* checksum field */
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union {
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u_int32_t icmp6_un_data32[1]; /* type-specific field */
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u_int16_t icmp6_un_data16[2]; /* type-specific field */
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u_int8_t icmp6_un_data8[4]; /* type-specific field */
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} icmp6_dataun;
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};
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#define icmp6_data32 icmp6_dataun.icmp6_un_data32
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#define icmp6_data16 icmp6_dataun.icmp6_un_data16
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#define icmp6_data8 icmp6_dataun.icmp6_un_data8
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#define icmp6_pptr icmp6_data32[0] /* parameter prob */
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#define icmp6_mtu icmp6_data32[0] /* packet too big */
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#define icmp6_id icmp6_data16[0] /* echo request/reply */
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#define icmp6_seq icmp6_data16[1] /* echo request/reply */
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#define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */
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#define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */
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#define ICMP6_PACKET_TOO_BIG 2 /* packet too big */
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#define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */
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#define ICMP6_PARAM_PROB 4 /* ip6 header bad */
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#define ICMP6_ECHO_REQUEST 128 /* echo service */
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#define ICMP6_ECHO_REPLY 129 /* echo reply */
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#define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */
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#define MLD6_LISTENER_QUERY 130 /* multicast listener query */
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#define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */
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#define MLD6_LISTENER_REPORT 131 /* multicast listener report */
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#define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */
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#define MLD6_LISTENER_DONE 132 /* multicast listener done */
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#define ND_ROUTER_SOLICIT 133 /* router solicitation */
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#define ND_ROUTER_ADVERT 134 /* router advertisement */
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#define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */
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#define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */
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#define ND_REDIRECT 137 /* redirect */
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#define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */
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#define ICMP6_WRUREQUEST 139 /* who are you request */
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#define ICMP6_WRUREPLY 140 /* who are you reply */
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#define ICMP6_FQDN_QUERY 139 /* FQDN query */
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#define ICMP6_FQDN_REPLY 140 /* FQDN reply */
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#define ICMP6_NI_QUERY 139 /* node information request */
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#define ICMP6_NI_REPLY 140 /* node information reply */
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#define IND_SOLICIT 141 /* inverse neighbor solicitation */
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#define IND_ADVERT 142 /* inverse neighbor advertisement */
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#define ICMP6_V2_MEMBERSHIP_REPORT 143 /* v2 membership report */
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#define MLDV2_LISTENER_REPORT 143 /* v2 multicast listener report */
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#define ICMP6_HADISCOV_REQUEST 144
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#define ICMP6_HADISCOV_REPLY 145
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#define ICMP6_MOBILEPREFIX_SOLICIT 146
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#define ICMP6_MOBILEPREFIX_ADVERT 147
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#define MLD6_MTRACE_RESP 200 /* mtrace response(to sender) */
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#define MLD6_MTRACE 201 /* mtrace messages */
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#define ICMP6_MAXTYPE 201
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#define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */
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#define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */
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#define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */
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#define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */
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#define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */
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#define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */
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#define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */
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#define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */
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#define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */
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#define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */
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#define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */
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#define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */
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#define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */
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#define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */
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#define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */
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#define ICMP6_NI_SUCCESS 0 /* node information successful reply */
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#define ICMP6_NI_REFUSED 1 /* node information request is refused */
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#define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */
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#define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */
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#define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */
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#define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */
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/* Used in kernel only */
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#define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */
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#define ND_REDIRECT_ROUTER 1 /* redirect to a better router */
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/*
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* Multicast Listener Discovery
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*/
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struct mld6_hdr {
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struct icmp6_hdr mld6_hdr;
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struct in6_addr mld6_addr; /* multicast address */
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};
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#define mld6_type mld6_hdr.icmp6_type
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#define mld6_code mld6_hdr.icmp6_code
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#define mld6_cksum mld6_hdr.icmp6_cksum
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#define mld6_maxdelay mld6_hdr.icmp6_data16[0]
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#define mld6_reserved mld6_hdr.icmp6_data16[1]
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#define MLD_MINLEN 24
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#define MLDV2_MINLEN 28
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/*
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* Neighbor Discovery
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*/
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struct nd_router_solicit { /* router solicitation */
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struct icmp6_hdr nd_rs_hdr;
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/* could be followed by options */
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};
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#define nd_rs_type nd_rs_hdr.icmp6_type
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#define nd_rs_code nd_rs_hdr.icmp6_code
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#define nd_rs_cksum nd_rs_hdr.icmp6_cksum
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#define nd_rs_reserved nd_rs_hdr.icmp6_data32[0]
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struct nd_router_advert { /* router advertisement */
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struct icmp6_hdr nd_ra_hdr;
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u_int32_t nd_ra_reachable; /* reachable time */
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u_int32_t nd_ra_retransmit; /* retransmit timer */
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/* could be followed by options */
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};
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#define nd_ra_type nd_ra_hdr.icmp6_type
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#define nd_ra_code nd_ra_hdr.icmp6_code
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#define nd_ra_cksum nd_ra_hdr.icmp6_cksum
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#define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0]
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#define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]
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#define ND_RA_FLAG_MANAGED 0x80
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#define ND_RA_FLAG_OTHER 0x40
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#define ND_RA_FLAG_HOME_AGENT 0x20
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/*
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* Router preference values based on draft-draves-ipngwg-router-selection-01.
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* These are non-standard definitions.
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*/
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#define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
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#define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */
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#define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */
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#define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */
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#define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */
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#define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
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struct nd_neighbor_solicit { /* neighbor solicitation */
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struct icmp6_hdr nd_ns_hdr;
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struct in6_addr nd_ns_target; /*target address */
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/* could be followed by options */
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};
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#define nd_ns_type nd_ns_hdr.icmp6_type
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#define nd_ns_code nd_ns_hdr.icmp6_code
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#define nd_ns_cksum nd_ns_hdr.icmp6_cksum
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#define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]
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struct nd_neighbor_advert { /* neighbor advertisement */
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struct icmp6_hdr nd_na_hdr;
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struct in6_addr nd_na_target; /* target address */
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/* could be followed by options */
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};
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#define nd_na_type nd_na_hdr.icmp6_type
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#define nd_na_code nd_na_hdr.icmp6_code
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#define nd_na_cksum nd_na_hdr.icmp6_cksum
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#define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]
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#define ND_NA_FLAG_ROUTER 0x80000000
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#define ND_NA_FLAG_SOLICITED 0x40000000
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#define ND_NA_FLAG_OVERRIDE 0x20000000
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struct nd_redirect { /* redirect */
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struct icmp6_hdr nd_rd_hdr;
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struct in6_addr nd_rd_target; /* target address */
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struct in6_addr nd_rd_dst; /* destination address */
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/* could be followed by options */
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};
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#define nd_rd_type nd_rd_hdr.icmp6_type
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#define nd_rd_code nd_rd_hdr.icmp6_code
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#define nd_rd_cksum nd_rd_hdr.icmp6_cksum
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#define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]
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struct nd_opt_hdr { /* Neighbor discovery option header */
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u_int8_t nd_opt_type;
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u_int8_t nd_opt_len;
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/* followed by option specific data*/
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};
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#define ND_OPT_SOURCE_LINKADDR 1
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#define ND_OPT_TARGET_LINKADDR 2
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#define ND_OPT_PREFIX_INFORMATION 3
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#define ND_OPT_REDIRECTED_HEADER 4
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#define ND_OPT_MTU 5
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#define ND_OPT_ADVINTERVAL 7
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#define ND_OPT_HOMEAGENT_INFO 8
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#define ND_OPT_ROUTE_INFO 9 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */
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#define ND_OPT_RDNSS 25
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#define ND_OPT_DNSSL 31
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struct nd_opt_prefix_info { /* prefix information */
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u_int8_t nd_opt_pi_type;
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u_int8_t nd_opt_pi_len;
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u_int8_t nd_opt_pi_prefix_len;
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u_int8_t nd_opt_pi_flags_reserved;
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u_int8_t nd_opt_pi_valid_time[4];
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u_int8_t nd_opt_pi_preferred_time[4];
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u_int8_t nd_opt_pi_reserved2[4];
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struct in6_addr nd_opt_pi_prefix;
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};
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#define ND_OPT_PI_FLAG_ONLINK 0x80
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#define ND_OPT_PI_FLAG_AUTO 0x40
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#define ND_OPT_PI_FLAG_ROUTER 0x20 /*2292bis*/
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struct nd_opt_rd_hdr { /* redirected header */
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u_int8_t nd_opt_rh_type;
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u_int8_t nd_opt_rh_len;
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u_int16_t nd_opt_rh_reserved1;
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u_int32_t nd_opt_rh_reserved2;
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/* followed by IP header and data */
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};
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struct nd_opt_mtu { /* MTU option */
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u_int8_t nd_opt_mtu_type;
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u_int8_t nd_opt_mtu_len;
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u_int16_t nd_opt_mtu_reserved;
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u_int32_t nd_opt_mtu_mtu;
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};
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struct nd_opt_rdnss { /* RDNSS RFC 6106 5.1 */
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u_int8_t nd_opt_rdnss_type;
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u_int8_t nd_opt_rdnss_len;
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u_int16_t nd_opt_rdnss_reserved;
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u_int32_t nd_opt_rdnss_lifetime;
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struct in6_addr nd_opt_rdnss_addr[1]; /* variable-length */
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};
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struct nd_opt_dnssl { /* DNSSL RFC 6106 5.2 */
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u_int8_t nd_opt_dnssl_type;
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u_int8_t nd_opt_dnssl_len;
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u_int16_t nd_opt_dnssl_reserved;
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u_int32_t nd_opt_dnssl_lifetime;
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/* followed by list of DNS search domains, variable-length */
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};
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struct nd_opt_advinterval { /* Advertisement interval option */
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u_int8_t nd_opt_adv_type;
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u_int8_t nd_opt_adv_len;
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u_int16_t nd_opt_adv_reserved;
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u_int32_t nd_opt_adv_interval;
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};
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struct nd_opt_homeagent_info { /* Home Agent info */
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u_int8_t nd_opt_hai_type;
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u_int8_t nd_opt_hai_len;
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u_int16_t nd_opt_hai_reserved;
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int16_t nd_opt_hai_preference;
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u_int16_t nd_opt_hai_lifetime;
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};
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struct nd_opt_route_info { /* route info */
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u_int8_t nd_opt_rti_type;
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u_int8_t nd_opt_rti_len;
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u_int8_t nd_opt_rti_prefixlen;
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u_int8_t nd_opt_rti_flags;
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u_int32_t nd_opt_rti_lifetime;
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/* prefix follows */
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};
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/*
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* icmp6 namelookup
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*/
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struct icmp6_namelookup {
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struct icmp6_hdr icmp6_nl_hdr;
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u_int8_t icmp6_nl_nonce[8];
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int32_t icmp6_nl_ttl;
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#if 0
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u_int8_t icmp6_nl_len;
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u_int8_t icmp6_nl_name[3];
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#endif
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/* could be followed by options */
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};
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/*
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* icmp6 node information
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*/
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struct icmp6_nodeinfo {
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struct icmp6_hdr icmp6_ni_hdr;
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u_int8_t icmp6_ni_nonce[8];
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/* could be followed by reply data */
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};
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#define ni_type icmp6_ni_hdr.icmp6_type
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#define ni_code icmp6_ni_hdr.icmp6_code
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#define ni_cksum icmp6_ni_hdr.icmp6_cksum
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#define ni_qtype icmp6_ni_hdr.icmp6_data16[0]
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#define ni_flags icmp6_ni_hdr.icmp6_data16[1]
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#define NI_QTYPE_NOOP 0 /* NOOP */
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#define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */
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#define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */
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#define NI_QTYPE_DNSNAME 2 /* DNS Name */
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#define NI_QTYPE_NODEADDR 3 /* Node Addresses */
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#define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */
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/* network endian */
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#define NI_SUPTYPE_FLAG_COMPRESS ((u_int16_t)htons(0x1))
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#define NI_FQDN_FLAG_VALIDTTL ((u_int16_t)htons(0x1))
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/* network endian */
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#define NI_NODEADDR_FLAG_TRUNCATE ((u_int16_t)htons(0x1))
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#define NI_NODEADDR_FLAG_ALL ((u_int16_t)htons(0x2))
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#define NI_NODEADDR_FLAG_COMPAT ((u_int16_t)htons(0x4))
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#define NI_NODEADDR_FLAG_LINKLOCAL ((u_int16_t)htons(0x8))
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#define NI_NODEADDR_FLAG_SITELOCAL ((u_int16_t)htons(0x10))
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#define NI_NODEADDR_FLAG_GLOBAL ((u_int16_t)htons(0x20))
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#define NI_NODEADDR_FLAG_ANYCAST ((u_int16_t)htons(0x40)) /* just experimental. not in spec */
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struct ni_reply_fqdn {
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u_int32_t ni_fqdn_ttl; /* TTL */
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|
u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
|
|
u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
|
|
};
|
|
|
|
/*
|
|
* Router Renumbering. as router-renum-08.txt
|
|
*/
|
|
struct icmp6_router_renum { /* router renumbering header */
|
|
struct icmp6_hdr rr_hdr;
|
|
u_int8_t rr_segnum;
|
|
u_int8_t rr_flags;
|
|
u_int16_t rr_maxdelay;
|
|
u_int32_t rr_reserved;
|
|
};
|
|
#define ICMP6_RR_FLAGS_TEST 0x80
|
|
#define ICMP6_RR_FLAGS_REQRESULT 0x40
|
|
#define ICMP6_RR_FLAGS_FORCEAPPLY 0x20
|
|
#define ICMP6_RR_FLAGS_SPECSITE 0x10
|
|
#define ICMP6_RR_FLAGS_PREVDONE 0x08
|
|
|
|
#define rr_type rr_hdr.icmp6_type
|
|
#define rr_code rr_hdr.icmp6_code
|
|
#define rr_cksum rr_hdr.icmp6_cksum
|
|
#define rr_seqnum rr_hdr.icmp6_data32[0]
|
|
|
|
struct rr_pco_match { /* match prefix part */
|
|
u_int8_t rpm_code;
|
|
u_int8_t rpm_len;
|
|
u_int8_t rpm_ordinal;
|
|
u_int8_t rpm_matchlen;
|
|
u_int8_t rpm_minlen;
|
|
u_int8_t rpm_maxlen;
|
|
u_int16_t rpm_reserved;
|
|
struct in6_addr rpm_prefix;
|
|
};
|
|
|
|
#define RPM_PCO_ADD 1
|
|
#define RPM_PCO_CHANGE 2
|
|
#define RPM_PCO_SETGLOBAL 3
|
|
#define RPM_PCO_MAX 4
|
|
|
|
struct rr_pco_use { /* use prefix part */
|
|
u_int8_t rpu_uselen;
|
|
u_int8_t rpu_keeplen;
|
|
u_int8_t rpu_ramask;
|
|
u_int8_t rpu_raflags;
|
|
u_int32_t rpu_vltime;
|
|
u_int32_t rpu_pltime;
|
|
u_int32_t rpu_flags;
|
|
struct in6_addr rpu_prefix;
|
|
};
|
|
#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
|
|
#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
|
|
|
|
/* network endian */
|
|
#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME ((u_int32_t)htonl(0x80000000))
|
|
#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME ((u_int32_t)htonl(0x40000000))
|
|
|
|
struct rr_result { /* router renumbering result message */
|
|
u_int16_t rrr_flags;
|
|
u_int8_t rrr_ordinal;
|
|
u_int8_t rrr_matchedlen;
|
|
u_int32_t rrr_ifid;
|
|
struct in6_addr rrr_prefix;
|
|
};
|
|
/* network endian */
|
|
#define ICMP6_RR_RESULT_FLAGS_OOB ((u_int16_t)htons(0x0002))
|
|
#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN ((u_int16_t)htons(0x0001))
|
|
|
|
#endif /* not _NETINET_ICMP6_H_ */
|