2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the project nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * $KAME: in6_proto.c,v 1.91 2001/05/27 13:28:35 itojun Exp $
35 * Copyright (c) 1982, 1986, 1993
36 * The Regents of the University of California. All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * 2. Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in the
45 * documentation and/or other materials provided with the distribution.
46 * 3. Neither the name of the University nor the names of its contributors
47 * may be used to endorse or promote products derived from this software
48 * without specific prior written permission.
50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62 * @(#)in_proto.c 8.1 (Berkeley) 6/10/93
65 #include <sys/cdefs.h>
66 __FBSDID("$FreeBSD$");
69 #include "opt_inet6.h"
70 #include "opt_ipsec.h"
71 #include "opt_ipstealth.h"
73 #include "opt_mpath.h"
74 #include "opt_route.h"
76 #include <sys/param.h>
77 #include <sys/socket.h>
78 #include <sys/socketvar.h>
80 #include <sys/protosw.h>
82 #include <sys/kernel.h>
83 #include <sys/malloc.h>
84 #include <sys/domain.h>
86 #include <sys/systm.h>
87 #include <sys/sysctl.h>
90 #include <net/if_var.h>
91 #include <net/radix.h>
92 #include <net/route.h>
94 #include <net/radix_mpath.h>
97 #include <netinet/in.h>
98 #include <netinet/in_systm.h>
99 #include <netinet/in_var.h>
100 #include <netinet/ip_encap.h>
101 #include <netinet/ip.h>
102 #include <netinet/ip_var.h>
103 #include <netinet/ip6.h>
104 #include <netinet6/ip6_var.h>
105 #include <netinet/icmp6.h>
107 #include <netinet/tcp.h>
108 #include <netinet/tcp_timer.h>
109 #include <netinet/tcp_var.h>
110 #include <netinet/udp.h>
111 #include <netinet/udp_var.h>
112 #include <netinet6/tcp6_var.h>
113 #include <netinet6/raw_ip6.h>
114 #include <netinet6/udp6_var.h>
115 #include <netinet6/pim6_var.h>
116 #include <netinet6/nd6.h>
119 #include <netinet/in_pcb.h>
120 #include <netinet/sctp_pcb.h>
121 #include <netinet/sctp.h>
122 #include <netinet/sctp_var.h>
123 #include <netinet6/sctp6_var.h>
126 #include <netinet6/ip6protosw.h>
129 * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
131 FEATURE(inet6, "Internet Protocol version 6");
133 extern struct domain inet6domain;
134 static struct pr_usrreqs nousrreqs;
137 #define PR_ABRTACPTDIS 0
139 /* Spacer for loadable protocols. */
140 #define IP6PROTOSPACER \
142 .pr_domain = &inet6domain, \
143 .pr_protocol = PROTO_SPACER, \
144 .pr_usrreqs = &nousrreqs \
147 struct protosw inet6sw[] = {
150 .pr_domain = &inet6domain,
151 .pr_protocol = IPPROTO_IPV6,
153 .pr_slowtimo = frag6_slowtimo,
154 .pr_drain = frag6_drain,
155 .pr_usrreqs = &nousrreqs,
158 .pr_type = SOCK_DGRAM,
159 .pr_domain = &inet6domain,
160 .pr_protocol = IPPROTO_UDP,
161 .pr_flags = PR_ATOMIC|PR_ADDR,
162 .pr_input = udp6_input,
163 .pr_ctlinput = udp6_ctlinput,
164 .pr_ctloutput = ip6_ctloutput,
165 #ifndef INET /* Do not call initialization twice. */
168 .pr_usrreqs = &udp6_usrreqs,
171 .pr_type = SOCK_STREAM,
172 .pr_domain = &inet6domain,
173 .pr_protocol = IPPROTO_TCP,
174 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN,
175 .pr_input = tcp6_input,
176 .pr_ctlinput = tcp6_ctlinput,
177 .pr_ctloutput = tcp_ctloutput,
178 #ifndef INET /* don't call initialization and timeout routines twice */
180 .pr_slowtimo = tcp_slowtimo,
182 .pr_drain = tcp_drain,
183 .pr_usrreqs = &tcp6_usrreqs,
187 .pr_type = SOCK_SEQPACKET,
188 .pr_domain = &inet6domain,
189 .pr_protocol = IPPROTO_SCTP,
190 .pr_flags = PR_WANTRCVD|PR_LASTHDR,
191 .pr_input = sctp6_input,
192 .pr_ctlinput = sctp6_ctlinput,
193 .pr_ctloutput = sctp_ctloutput,
194 .pr_drain = sctp_drain,
195 #ifndef INET /* Do not call initialization twice. */
196 .pr_init = sctp_init,
198 .pr_usrreqs = &sctp6_usrreqs
201 .pr_type = SOCK_STREAM,
202 .pr_domain = &inet6domain,
203 .pr_protocol = IPPROTO_SCTP,
204 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LASTHDR,
205 .pr_input = sctp6_input,
206 .pr_ctlinput = sctp6_ctlinput,
207 .pr_ctloutput = sctp_ctloutput,
208 .pr_drain = sctp_drain,
209 .pr_usrreqs = &sctp6_usrreqs
213 .pr_type = SOCK_DGRAM,
214 .pr_domain = &inet6domain,
215 .pr_protocol = IPPROTO_UDPLITE,
216 .pr_flags = PR_ATOMIC|PR_ADDR,
217 .pr_input = udp6_input,
218 .pr_ctlinput = udplite6_ctlinput,
219 .pr_ctloutput = udp_ctloutput,
220 #ifndef INET /* Do not call initialization twice. */
221 .pr_init = udplite_init,
223 .pr_usrreqs = &udp6_usrreqs,
227 .pr_domain = &inet6domain,
228 .pr_protocol = IPPROTO_RAW,
229 .pr_flags = PR_ATOMIC|PR_ADDR,
230 .pr_input = rip6_input,
231 .pr_output = rip6_output,
232 .pr_ctlinput = rip6_ctlinput,
233 .pr_ctloutput = rip6_ctloutput,
234 #ifndef INET /* Do not call initialization twice. */
237 .pr_usrreqs = &rip6_usrreqs
241 .pr_domain = &inet6domain,
242 .pr_protocol = IPPROTO_ICMPV6,
243 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
244 .pr_input = icmp6_input,
245 .pr_output = rip6_output,
246 .pr_ctlinput = rip6_ctlinput,
247 .pr_ctloutput = rip6_ctloutput,
248 .pr_fasttimo = icmp6_fasttimo,
249 .pr_slowtimo = icmp6_slowtimo,
250 .pr_usrreqs = &rip6_usrreqs
254 .pr_domain = &inet6domain,
255 .pr_protocol = IPPROTO_DSTOPTS,
256 .pr_flags = PR_ATOMIC|PR_ADDR,
257 .pr_input = dest6_input,
258 .pr_usrreqs = &nousrreqs
262 .pr_domain = &inet6domain,
263 .pr_protocol = IPPROTO_ROUTING,
264 .pr_flags = PR_ATOMIC|PR_ADDR,
265 .pr_input = route6_input,
266 .pr_usrreqs = &nousrreqs
270 .pr_domain = &inet6domain,
271 .pr_protocol = IPPROTO_FRAGMENT,
272 .pr_flags = PR_ATOMIC|PR_ADDR,
273 .pr_input = frag6_input,
274 .pr_usrreqs = &nousrreqs
279 .pr_domain = &inet6domain,
280 .pr_protocol = IPPROTO_IPV4,
281 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
282 .pr_input = encap6_input,
283 .pr_output = rip6_output,
284 .pr_ctloutput = rip6_ctloutput,
285 .pr_init = encap_init,
286 .pr_usrreqs = &rip6_usrreqs
291 .pr_domain = &inet6domain,
292 .pr_protocol = IPPROTO_IPV6,
293 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
294 .pr_input = encap6_input,
295 .pr_output = rip6_output,
296 .pr_ctloutput = rip6_ctloutput,
297 .pr_init = encap_init,
298 .pr_usrreqs = &rip6_usrreqs
302 .pr_domain = &inet6domain,
303 .pr_protocol = IPPROTO_GRE,
304 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
305 .pr_input = encap6_input,
306 .pr_output = rip6_output,
307 .pr_ctloutput = rip6_ctloutput,
308 .pr_init = encap_init,
309 .pr_usrreqs = &rip6_usrreqs
313 .pr_domain = &inet6domain,
314 .pr_protocol = IPPROTO_PIM,
315 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
316 .pr_input = encap6_input,
317 .pr_output = rip6_output,
318 .pr_ctloutput = rip6_ctloutput,
319 .pr_usrreqs = &rip6_usrreqs
321 /* Spacer n-times for loadable protocols. */
333 .pr_domain = &inet6domain,
334 .pr_flags = PR_ATOMIC|PR_ADDR,
335 .pr_input = rip6_input,
336 .pr_output = rip6_output,
337 .pr_ctloutput = rip6_ctloutput,
338 .pr_usrreqs = &rip6_usrreqs
342 extern int in6_inithead(void **, int);
344 extern int in6_detachhead(void **, int);
347 struct domain inet6domain = {
348 .dom_family = AF_INET6,
349 .dom_name = "internet6",
350 .dom_protosw = (struct protosw *)inet6sw,
351 .dom_protoswNPROTOSW = (struct protosw *)&inet6sw[nitems(inet6sw)],
353 .dom_rtattach = rn6_mpath_inithead,
355 .dom_rtattach = in6_inithead,
358 .dom_rtdetach = in6_detachhead,
360 .dom_ifattach = in6_domifattach,
361 .dom_ifdetach = in6_domifdetach,
362 .dom_ifmtu = in6_domifmtu
365 VNET_DOMAIN_SET(inet6);
368 * Internet configuration info
370 #ifndef IPV6FORWARDING
372 #define IPV6FORWARDING 1 /* forward IP6 packets not for us */
374 #define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */
375 #endif /* GATEWAY6 */
376 #endif /* !IPV6FORWARDING */
378 #ifndef IPV6_SENDREDIRECTS
379 #define IPV6_SENDREDIRECTS 1
382 VNET_DEFINE(int, ip6_forwarding) = IPV6FORWARDING; /* act as router? */
383 VNET_DEFINE(int, ip6_sendredirects) = IPV6_SENDREDIRECTS;
384 VNET_DEFINE(int, ip6_defhlim) = IPV6_DEFHLIM;
385 VNET_DEFINE(int, ip6_defmcasthlim) = IPV6_DEFAULT_MULTICAST_HOPS;
386 VNET_DEFINE(int, ip6_accept_rtadv) = 0;
387 VNET_DEFINE(int, ip6_no_radr) = 0;
388 VNET_DEFINE(int, ip6_norbit_raif) = 0;
389 VNET_DEFINE(int, ip6_rfc6204w3) = 0;
390 VNET_DEFINE(int, ip6_maxfragpackets); /* initialized in frag6.c:frag6_init() */
391 VNET_DEFINE(int, ip6_maxfrags); /* initialized in frag6.c:frag6_init() */
392 VNET_DEFINE(int, ip6_log_interval) = 5;
393 VNET_DEFINE(int, ip6_hdrnestlimit) = 15;/* How many header options will we
395 VNET_DEFINE(int, ip6_dad_count) = 1; /* DupAddrDetectionTransmits */
396 VNET_DEFINE(int, ip6_auto_flowlabel) = 1;
397 VNET_DEFINE(int, ip6_use_deprecated) = 1;/* allow deprecated addr
399 VNET_DEFINE(int, ip6_rr_prune) = 5; /* router renumbering prefix
400 * walk list every 5 sec. */
401 VNET_DEFINE(int, ip6_mcast_pmtu) = 0; /* enable pMTU discovery for multicast? */
402 VNET_DEFINE(int, ip6_v6only) = 1;
404 VNET_DEFINE(time_t, ip6_log_time) = (time_t)0L;
406 VNET_DEFINE(int, ip6stealth) = 0;
408 VNET_DEFINE(int, nd6_onlink_ns_rfc4861) = 0;/* allow 'on-link' nd6 NS
413 * BSDI4 defines these variables in in_proto.c...
414 * XXX: what if we don't define INET? Should we define pmtu6_expire
415 * or so? (jinmei@kame.net 19990310)
417 VNET_DEFINE(int, pmtu_expire) = 60*10;
418 VNET_DEFINE(int, pmtu_probe) = 60*2;
420 /* ICMPV6 parameters */
421 VNET_DEFINE(int, icmp6_rediraccept) = 1;/* accept and process redirects */
422 VNET_DEFINE(int, icmp6_redirtimeout) = 10 * 60; /* 10 minutes */
423 VNET_DEFINE(int, icmp6errppslim) = 100; /* 100pps */
424 /* control how to respond to NI queries */
425 VNET_DEFINE(int, icmp6_nodeinfo) =
426 (ICMP6_NODEINFO_FQDNOK|ICMP6_NODEINFO_NODEADDROK);
427 VNET_DEFINE(int, icmp6_nodeinfo_oldmcprefix) = 1;
430 * sysctl related items.
432 SYSCTL_NODE(_net, PF_INET6, inet6, CTLFLAG_RW, 0,
436 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6, CTLFLAG_RW, 0, "IP6");
437 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6, CTLFLAG_RW, 0, "ICMP6");
438 SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6, CTLFLAG_RW, 0, "UDP6");
439 SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6, CTLFLAG_RW, 0, "TCP6");
441 SYSCTL_NODE(_net_inet6, IPPROTO_SCTP, sctp6, CTLFLAG_RW, 0, "SCTP6");
443 #if defined(IPSEC) || defined(IPSEC_SUPPORT)
444 SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6, CTLFLAG_RW, 0, "IPSEC6");
449 sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS)
453 val = V_ip6_temp_preferred_lifetime;
454 error = sysctl_handle_int(oidp, &val, 0, req);
455 if (error != 0 || !req->newptr)
457 if (val < V_ip6_desync_factor + V_ip6_temp_regen_advance)
459 V_ip6_temp_preferred_lifetime = val;
464 sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS)
468 val = V_ip6_temp_valid_lifetime;
469 error = sysctl_handle_int(oidp, &val, 0, req);
470 if (error != 0 || !req->newptr)
472 if (val < V_ip6_temp_preferred_lifetime)
474 V_ip6_temp_valid_lifetime = val;
478 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding,
479 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_forwarding), 0,
480 "Enable forwarding of IPv6 packets between interfaces");
481 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect,
482 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_sendredirects), 0,
483 "Send ICMPv6 redirects for unforwardable IPv6 packets");
484 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim,
485 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defhlim), 0,
486 "Default hop limit to use for outgoing IPv6 packets");
487 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_STATS, stats, struct ip6stat,
489 "IP6 statistics (struct ip6stat, netinet6/ip6_var.h)");
490 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets,
491 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragpackets), 0,
492 "Default maximum number of outstanding fragmented IPv6 packets. "
493 "A value of 0 means no fragmented packets will be accepted, while a "
494 "a value of -1 means no limit");
495 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, accept_rtadv,
496 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_accept_rtadv), 0,
497 "Default value of per-interface flag for accepting ICMPv6 RA messages");
498 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NO_RADR, no_radr,
499 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_no_radr), 0,
500 "Default value of per-interface flag to control whether routers "
501 "sending ICMPv6 RA messages on that interface are added into the "
502 "default router list");
503 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NORBIT_RAIF, norbit_raif,
504 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_norbit_raif), 0,
505 "Always set clear the R flag in ICMPv6 NA messages when accepting RA "
507 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RFC6204W3, rfc6204w3,
508 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rfc6204w3), 0,
509 "Accept the default router list from ICMPv6 RA messages even "
510 "when packet forwarding is enabled");
511 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, log_interval,
512 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_log_interval), 0,
513 "Frequency in seconds at which to log IPv6 forwarding errors");
514 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, hdrnestlimit,
515 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_hdrnestlimit), 0,
516 "Default maximum number of IPv6 extension headers permitted on "
517 "incoming IPv6 packets, 0 for no artificial limit");
518 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, dad_count,
519 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_dad_count), 0,
520 "Number of ICMPv6 NS messages sent during duplicate address detection");
521 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, auto_flowlabel,
522 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_flowlabel), 0,
523 "Provide an IPv6 flowlabel in outbound packets");
524 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, defmcasthlim,
525 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defmcasthlim), 0,
526 "Default hop limit for IPv6 multicast packets originating from this "
528 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, kame_version,
529 CTLFLAG_RD, __KAME_VERSION, 0,
530 "KAME version string");
531 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, use_deprecated,
532 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_deprecated), 0,
533 "Allow the use of addresses whose preferred lifetimes have expired");
534 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, rr_prune,
535 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rr_prune), 0,
536 ""); /* XXX unused */
537 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR, use_tempaddr,
538 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_tempaddr), 0,
539 "Create RFC3041 temporary addresses for autoconfigured addresses");
540 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
541 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW,
542 NULL, 0, sysctl_ip6_temppltime, "I",
543 "Maximum preferred lifetime for temporary addresses");
544 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime,
545 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW,
546 NULL, 0, sysctl_ip6_tempvltime, "I",
547 "Maximum valid lifetime for temporary addresses");
548 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY, v6only,
549 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_v6only), 0,
550 "Restrict AF_INET6 sockets to IPv6 addresses only");
551 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL, auto_linklocal,
552 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_linklocal), 0,
553 "Default value of per-interface flag for automatically adding an IPv6 "
554 "link-local address to interfaces when attached");
555 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats,
556 struct rip6stat, rip6stat,
557 "Raw IP6 statistics (struct rip6stat, netinet6/raw_ip6.h)");
558 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR, prefer_tempaddr,
559 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_prefer_tempaddr), 0,
560 "Prefer RFC3041 temporary addresses in source address selection");
561 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE, use_defaultzone,
562 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_defzone), 0,
563 "Use the default scope zone when none is specified");
564 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGS, maxfrags,
565 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfrags), 0,
566 "Maximum allowed number of outstanding IPv6 packet fragments");
567 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU, mcast_pmtu,
568 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_mcast_pmtu), 0,
569 "Enable path MTU discovery for multicast packets");
571 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_STEALTH, stealth, CTLFLAG_VNET | CTLFLAG_RW,
572 &VNET_NAME(ip6stealth), 0,
573 "Forward IPv6 packets without decrementing their TTL");
576 /* net.inet6.icmp6 */
577 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, rediraccept,
578 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_rediraccept), 0,
579 "Accept ICMPv6 redirect messages");
580 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, redirtimeout,
581 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_redirtimeout), 0,
582 ""); /* XXX unused */
583 SYSCTL_VNET_PCPUSTAT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats,
584 struct icmp6stat, icmp6stat,
585 "ICMPv6 statistics (struct icmp6stat, netinet/icmp6.h)");
586 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, nd6_prune,
587 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_prune), 0,
588 "Frequency in seconds of checks for expired prefixes and routers");
589 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, nd6_delay,
590 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_delay), 0,
591 "Delay in seconds before probing for reachability");
592 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, nd6_umaxtries,
593 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_umaxtries), 0,
594 "Number of ICMPv6 NS messages sent during reachability detection");
595 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, nd6_mmaxtries,
596 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_mmaxtries), 0,
597 "Number of ICMPv6 NS messages sent during address resolution");
598 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, nd6_useloopback,
599 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_useloopback), 0,
600 "Create a loopback route when configuring an IPv6 address");
601 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO, nodeinfo,
602 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_nodeinfo), 0,
603 "Mask of enabled RF4620 node information query types");
604 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO_OLDMCPREFIX,
605 nodeinfo_oldmcprefix, CTLFLAG_VNET | CTLFLAG_RW,
606 &VNET_NAME(icmp6_nodeinfo_oldmcprefix), 0,
607 "Join old IPv6 NI group address in draft-ietf-ipngwg-icmp-name-lookup "
608 "for compatibility with KAME implementation");
609 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT, errppslimit,
610 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6errppslim), 0,
611 "Maximum number of ICMPv6 error messages per second");
612 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT, nd6_maxnudhint,
613 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_maxnudhint), 0,
614 ""); /* XXX unused */
615 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG, nd6_debug,
616 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_debug), 0,
617 "Log NDP debug messages");
618 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861,
619 nd6_onlink_ns_rfc4861, CTLFLAG_VNET | CTLFLAG_RW,
620 &VNET_NAME(nd6_onlink_ns_rfc4861), 0,
621 "Accept 'on-link' ICMPv6 NS messages in compliance with RFC 4861");