2 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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. Neither the name of the project nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $KAME: in6_proto.c,v 1.91 2001/05/27 13:28:35 itojun Exp $
33 * Copyright (c) 1982, 1986, 1993
34 * The Regents of the University of California. All rights reserved.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 4. Neither the name of the University nor the names of its contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
60 * @(#)in_proto.c 8.1 (Berkeley) 6/10/93
63 #include <sys/cdefs.h>
64 __FBSDID("$FreeBSD$");
67 #include "opt_inet6.h"
68 #include "opt_ipsec.h"
69 #include "opt_ipstealth.h"
72 #include "opt_mpath.h"
74 #include <sys/param.h>
75 #include <sys/socket.h>
76 #include <sys/socketvar.h>
77 #include <sys/protosw.h>
78 #include <sys/kernel.h>
79 #include <sys/domain.h>
81 #include <sys/systm.h>
82 #include <sys/sysctl.h>
83 #include <sys/vimage.h>
86 #include <net/radix.h>
87 #include <net/route.h>
89 #include <net/radix_mpath.h>
92 #include <netinet/in.h>
93 #include <netinet/in_systm.h>
94 #include <netinet/in_var.h>
95 #include <netinet/ip_encap.h>
96 #include <netinet/ip.h>
97 #include <netinet/ip_var.h>
98 #include <netinet/ip6.h>
99 #include <netinet6/ip6_var.h>
100 #include <netinet/icmp6.h>
102 #include <netinet/tcp.h>
103 #include <netinet/tcp_timer.h>
104 #include <netinet/tcp_var.h>
105 #include <netinet/udp.h>
106 #include <netinet/udp_var.h>
107 #include <netinet6/tcp6_var.h>
108 #include <netinet6/raw_ip6.h>
109 #include <netinet6/udp6_var.h>
110 #include <netinet6/pim6_var.h>
111 #include <netinet6/nd6.h>
114 #include <netinet/ip_carp.h>
118 #include <netinet/in_pcb.h>
119 #include <netinet/sctp_pcb.h>
120 #include <netinet/sctp.h>
121 #include <netinet/sctp_var.h>
122 #include <netinet6/sctp6_var.h>
126 #include <netipsec/ipsec.h>
127 #include <netipsec/ipsec6.h>
130 #include <netinet6/ip6protosw.h>
133 * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
136 extern struct domain inet6domain;
137 static struct pr_usrreqs nousrreqs;
140 #define PR_ABRTACPTDIS 0
142 struct ip6protosw inet6sw[] = {
145 .pr_domain = &inet6domain,
146 .pr_protocol = IPPROTO_IPV6,
148 .pr_slowtimo = frag6_slowtimo,
149 .pr_drain = frag6_drain,
150 .pr_usrreqs = &nousrreqs,
153 .pr_type = SOCK_DGRAM,
154 .pr_domain = &inet6domain,
155 .pr_protocol = IPPROTO_UDP,
156 .pr_flags = PR_ATOMIC|PR_ADDR,
157 .pr_input = udp6_input,
158 .pr_ctlinput = udp6_ctlinput,
159 .pr_ctloutput = ip6_ctloutput,
160 .pr_usrreqs = &udp6_usrreqs,
163 .pr_type = SOCK_STREAM,
164 .pr_domain = &inet6domain,
165 .pr_protocol = IPPROTO_TCP,
166 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN,
167 .pr_input = tcp6_input,
168 .pr_ctlinput = tcp6_ctlinput,
169 .pr_ctloutput = tcp_ctloutput,
170 #ifndef INET /* don't call initialization and timeout routines twice */
172 .pr_fasttimo = tcp_fasttimo,
173 .pr_slowtimo = tcp_slowtimo,
175 .pr_drain = tcp_drain,
176 .pr_usrreqs = &tcp6_usrreqs,
180 .pr_type = SOCK_DGRAM,
181 .pr_domain = &inet6domain,
182 .pr_protocol = IPPROTO_SCTP,
183 .pr_flags = PR_WANTRCVD,
184 .pr_input = sctp6_input,
185 .pr_ctlinput = sctp6_ctlinput,
186 .pr_ctloutput = sctp_ctloutput,
187 .pr_drain = sctp_drain,
188 .pr_usrreqs = &sctp6_usrreqs
191 .pr_type = SOCK_SEQPACKET,
192 .pr_domain = &inet6domain,
193 .pr_protocol = IPPROTO_SCTP,
194 .pr_flags = PR_WANTRCVD,
195 .pr_input = sctp6_input,
196 .pr_ctlinput = sctp6_ctlinput,
197 .pr_ctloutput = sctp_ctloutput,
198 .pr_drain = sctp_drain,
199 .pr_usrreqs = &sctp6_usrreqs
203 .pr_type = SOCK_STREAM,
204 .pr_domain = &inet6domain,
205 .pr_protocol = IPPROTO_SCTP,
206 .pr_flags = PR_WANTRCVD,
207 .pr_input = sctp6_input,
208 .pr_ctlinput = sctp6_ctlinput,
209 .pr_ctloutput = sctp_ctloutput,
210 .pr_drain = sctp_drain,
211 .pr_usrreqs = &sctp6_usrreqs
216 .pr_domain = &inet6domain,
217 .pr_protocol = IPPROTO_RAW,
218 .pr_flags = PR_ATOMIC|PR_ADDR,
219 .pr_input = rip6_input,
220 .pr_output = rip6_output,
221 .pr_ctlinput = rip6_ctlinput,
222 .pr_ctloutput = rip6_ctloutput,
223 .pr_usrreqs = &rip6_usrreqs
227 .pr_domain = &inet6domain,
228 .pr_protocol = IPPROTO_ICMPV6,
229 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
230 .pr_input = icmp6_input,
231 .pr_output = rip6_output,
232 .pr_ctlinput = rip6_ctlinput,
233 .pr_ctloutput = rip6_ctloutput,
234 .pr_init = icmp6_init,
235 .pr_fasttimo = icmp6_fasttimo,
236 .pr_usrreqs = &rip6_usrreqs
240 .pr_domain = &inet6domain,
241 .pr_protocol = IPPROTO_DSTOPTS,
242 .pr_flags = PR_ATOMIC|PR_ADDR,
243 .pr_input = dest6_input,
244 .pr_usrreqs = &nousrreqs
248 .pr_domain = &inet6domain,
249 .pr_protocol = IPPROTO_ROUTING,
250 .pr_flags = PR_ATOMIC|PR_ADDR,
251 .pr_input = route6_input,
252 .pr_usrreqs = &nousrreqs
256 .pr_domain = &inet6domain,
257 .pr_protocol = IPPROTO_FRAGMENT,
258 .pr_flags = PR_ATOMIC|PR_ADDR,
259 .pr_input = frag6_input,
260 .pr_usrreqs = &nousrreqs
265 .pr_domain = &inet6domain,
266 .pr_protocol = IPPROTO_AH,
267 .pr_flags = PR_ATOMIC|PR_ADDR,
268 .pr_input = ipsec6_common_input,
269 .pr_usrreqs = &nousrreqs,
273 .pr_domain = &inet6domain,
274 .pr_protocol = IPPROTO_ESP,
275 .pr_flags = PR_ATOMIC|PR_ADDR,
276 .pr_input = ipsec6_common_input,
277 .pr_ctlinput = esp6_ctlinput,
278 .pr_usrreqs = &nousrreqs,
282 .pr_domain = &inet6domain,
283 .pr_protocol = IPPROTO_IPCOMP,
284 .pr_flags = PR_ATOMIC|PR_ADDR,
285 .pr_input = ipsec6_common_input,
286 .pr_usrreqs = &nousrreqs,
292 .pr_domain = &inet6domain,
293 .pr_protocol = IPPROTO_IPV4,
294 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
295 .pr_input = encap6_input,
296 .pr_output = rip6_output,
297 .pr_ctloutput = rip6_ctloutput,
298 .pr_init = encap_init,
299 .pr_usrreqs = &rip6_usrreqs
304 .pr_domain = &inet6domain,
305 .pr_protocol = IPPROTO_IPV6,
306 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
307 .pr_input = encap6_input,
308 .pr_output = rip6_output,
309 .pr_ctloutput = rip6_ctloutput,
310 .pr_init = encap_init,
311 .pr_usrreqs = &rip6_usrreqs
315 .pr_domain = &inet6domain,
316 .pr_protocol = IPPROTO_PIM,
317 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
318 .pr_input = encap6_input,
319 .pr_output = rip6_output,
320 .pr_ctloutput = rip6_ctloutput,
321 .pr_usrreqs = &rip6_usrreqs
326 .pr_domain = &inet6domain,
327 .pr_protocol = IPPROTO_CARP,
328 .pr_flags = PR_ATOMIC|PR_ADDR,
329 .pr_input = carp6_input,
330 .pr_output = rip6_output,
331 .pr_ctloutput = rip6_ctloutput,
332 .pr_usrreqs = &rip6_usrreqs
334 #endif /* DEV_CARP */
338 .pr_domain = &inet6domain,
339 .pr_flags = PR_ATOMIC|PR_ADDR,
340 .pr_input = rip6_input,
341 .pr_output = rip6_output,
342 .pr_ctloutput = rip6_ctloutput,
343 .pr_usrreqs = &rip6_usrreqs
347 extern int in6_inithead(void **, int);
349 struct domain inet6domain = {
350 .dom_family = AF_INET6,
351 .dom_name = "internet6",
352 .dom_protosw = (struct protosw *)inet6sw,
353 .dom_protoswNPROTOSW = (struct protosw *)
354 &inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])],
356 .dom_rtattach = rn6_mpath_inithead,
358 .dom_rtattach = in6_inithead,
360 .dom_rtoffset = offsetof(struct sockaddr_in6, sin6_addr) << 3,
361 .dom_maxrtkey = sizeof(struct sockaddr_in6),
362 .dom_ifattach = in6_domifattach,
363 .dom_ifdetach = in6_domifdetach
369 * Internet configuration info
371 #ifdef VIMAGE_GLOBALS
373 int ip6_sendredirects;
375 int ip6_defmcasthlim;
376 int ip6_accept_rtadv;
377 int ip6_maxfragpackets;
379 int ip6_log_interval;
380 int ip6_hdrnestlimit;
382 int ip6_auto_flowlabel;
383 int ip6_use_deprecated;
390 int nd6_onlink_ns_rfc4861;
393 #ifdef VIMAGE_GLOBALS
396 * BSDI4 defines these variables in in_proto.c...
397 * XXX: what if we don't define INET? Should we define pmtu6_expire
398 * or so? (jinmei@kame.net 19990310)
403 /* raw IP6 parameters */
405 * Nominal space allocated to a raw ip socket.
407 u_long rip6_sendspace;
408 u_long rip6_recvspace;
410 /* ICMPV6 parameters */
411 int icmp6_rediraccept;
412 int icmp6_redirtimeout;
414 /* control how to respond to NI queries */
417 /* UDP on IP6 parameters */
420 #endif /* VIMAGE_GLOBALS */
423 * sysctl related items.
425 SYSCTL_NODE(_net, PF_INET6, inet6, CTLFLAG_RW, 0,
429 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6, CTLFLAG_RW, 0, "IP6");
430 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6, CTLFLAG_RW, 0, "ICMP6");
431 SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6, CTLFLAG_RW, 0, "UDP6");
432 SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6, CTLFLAG_RW, 0, "TCP6");
434 SYSCTL_NODE(_net_inet6, IPPROTO_SCTP, sctp6, CTLFLAG_RW, 0, "SCTP6");
437 SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6, CTLFLAG_RW, 0, "IPSEC6");
442 sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS)
444 INIT_VNET_INET6(curvnet);
448 error = SYSCTL_OUT(req, arg1, sizeof(int));
449 if (error || !req->newptr)
451 old = V_ip6_temp_preferred_lifetime;
452 error = SYSCTL_IN(req, arg1, sizeof(int));
453 if (V_ip6_temp_preferred_lifetime <
454 V_ip6_desync_factor + V_ip6_temp_regen_advance) {
455 V_ip6_temp_preferred_lifetime = old;
462 sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS)
464 INIT_VNET_INET6(curvnet);
468 error = SYSCTL_OUT(req, arg1, sizeof(int));
469 if (error || !req->newptr)
471 old = V_ip6_temp_valid_lifetime;
472 error = SYSCTL_IN(req, arg1, sizeof(int));
473 if (V_ip6_temp_valid_lifetime < V_ip6_temp_preferred_lifetime) {
474 V_ip6_temp_preferred_lifetime = old;
480 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_FORWARDING,
481 forwarding, CTLFLAG_RW, ip6_forwarding, 0, "");
482 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_SENDREDIRECTS,
483 redirect, CTLFLAG_RW, ip6_sendredirects, 0, "");
484 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_DEFHLIM,
485 hlim, CTLFLAG_RW, ip6_defhlim, 0, "");
486 SYSCTL_V_STRUCT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_STATS, stats,
487 CTLFLAG_RD, ip6stat, ip6stat, "");
488 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS,
489 maxfragpackets, CTLFLAG_RW, ip6_maxfragpackets, 0, "");
490 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_ACCEPT_RTADV,
491 accept_rtadv, CTLFLAG_RW, ip6_accept_rtadv, 0, "");
492 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_KEEPFAITH,
493 keepfaith, CTLFLAG_RW, ip6_keepfaith, 0, "");
494 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_LOG_INTERVAL,
495 log_interval, CTLFLAG_RW, ip6_log_interval, 0, "");
496 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_HDRNESTLIMIT,
497 hdrnestlimit, CTLFLAG_RW, ip6_hdrnestlimit, 0, "");
498 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_DAD_COUNT,
499 dad_count, CTLFLAG_RW, ip6_dad_count, 0, "");
500 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL,
501 auto_flowlabel, CTLFLAG_RW, ip6_auto_flowlabel, 0, "");
502 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_DEFMCASTHLIM,
503 defmcasthlim, CTLFLAG_RW, ip6_defmcasthlim, 0, "");
504 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION,
505 kame_version, CTLFLAG_RD, __KAME_VERSION, 0, "");
506 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_USE_DEPRECATED,
507 use_deprecated, CTLFLAG_RW, ip6_use_deprecated, 0, "");
508 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_RR_PRUNE,
509 rr_prune, CTLFLAG_RW, ip6_rr_prune, 0, "");
510 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_USETEMPADDR,
511 use_tempaddr, CTLFLAG_RW, ip6_use_tempaddr, 0, "");
512 SYSCTL_V_OID(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
513 CTLTYPE_INT|CTLFLAG_RW, ip6_temp_preferred_lifetime, 0,
514 sysctl_ip6_temppltime, "I", "");
515 SYSCTL_V_OID(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime,
516 CTLTYPE_INT|CTLFLAG_RW, ip6_temp_valid_lifetime, 0,
517 sysctl_ip6_tempvltime, "I", "");
518 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_V6ONLY,
519 v6only, CTLFLAG_RW, ip6_v6only, 0, "");
521 TUNABLE_INT("net.inet6.ip6.auto_linklocal", &ip6_auto_linklocal);
523 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL,
524 auto_linklocal, CTLFLAG_RW, ip6_auto_linklocal, 0, "");
525 SYSCTL_V_STRUCT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_RIP6STATS,
526 rip6stats, CTLFLAG_RD, rip6stat, rip6stat, "");
527 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR,
528 prefer_tempaddr, CTLFLAG_RW, ip6_prefer_tempaddr, 0, "");
529 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE,
530 use_defaultzone, CTLFLAG_RW, ip6_use_defzone, 0,"");
531 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_MAXFRAGS,
532 maxfrags, CTLFLAG_RW, ip6_maxfrags, 0, "");
533 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_MCAST_PMTU,
534 mcast_pmtu, CTLFLAG_RW, ip6_mcast_pmtu, 0, "");
536 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_ip6, IPV6CTL_STEALTH,
537 stealth, CTLFLAG_RW, ip6stealth, 0, "");
540 /* net.inet6.icmp6 */
541 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT,
542 rediraccept, CTLFLAG_RW, icmp6_rediraccept, 0, "");
543 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT,
544 redirtimeout, CTLFLAG_RW, icmp6_redirtimeout, 0, "");
545 SYSCTL_V_STRUCT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_STATS,
546 stats, CTLFLAG_RD, icmp6stat, icmp6stat, "");
547 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE,
548 nd6_prune, CTLFLAG_RW, nd6_prune, 0, "");
549 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_DELAY,
550 nd6_delay, CTLFLAG_RW, nd6_delay, 0, "");
551 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES,
552 nd6_umaxtries, CTLFLAG_RW, nd6_umaxtries, 0, "");
553 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES,
554 nd6_mmaxtries, CTLFLAG_RW, nd6_mmaxtries, 0, "");
555 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK,
556 nd6_useloopback, CTLFLAG_RW, nd6_useloopback, 0, "");
557 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_NODEINFO,
558 nodeinfo, CTLFLAG_RW, icmp6_nodeinfo, 0, "");
559 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT,
560 errppslimit, CTLFLAG_RW, icmp6errppslim, 0, "");
561 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT,
562 nd6_maxnudhint, CTLFLAG_RW, nd6_maxnudhint, 0, "");
563 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG,
564 nd6_debug, CTLFLAG_RW, nd6_debug, 0, "");
566 SYSCTL_V_INT(V_NET, vnet_inet6, _net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861,
567 nd6_onlink_ns_rfc4861, CTLFLAG_RW, nd6_onlink_ns_rfc4861, 0,
568 "Accept 'on-link' nd6 NS in compliance with RFC 4861.");