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"
71 #include "opt_mpath.h"
72 #include "opt_route.h"
74 #include <sys/param.h>
75 #include <sys/socket.h>
76 #include <sys/socketvar.h>
78 #include <sys/protosw.h>
80 #include <sys/kernel.h>
81 #include <sys/malloc.h>
82 #include <sys/domain.h>
84 #include <sys/systm.h>
85 #include <sys/sysctl.h>
88 #include <net/if_var.h>
89 #include <net/radix.h>
90 #include <net/route.h>
92 #include <net/radix_mpath.h>
95 #include <netinet/in.h>
96 #include <netinet/in_systm.h>
97 #include <netinet/in_var.h>
98 #include <netinet/ip_encap.h>
99 #include <netinet/ip.h>
100 #include <netinet/ip_var.h>
101 #include <netinet/ip6.h>
102 #include <netinet6/ip6_var.h>
103 #include <netinet/icmp6.h>
105 #include <netinet/tcp.h>
106 #include <netinet/tcp_timer.h>
107 #include <netinet/tcp_var.h>
108 #include <netinet/udp.h>
109 #include <netinet/udp_var.h>
110 #include <netinet6/tcp6_var.h>
111 #include <netinet6/raw_ip6.h>
112 #include <netinet6/udp6_var.h>
113 #include <netinet6/pim6_var.h>
114 #include <netinet6/nd6.h>
117 #include <netinet/in_pcb.h>
118 #include <netinet/sctp_pcb.h>
119 #include <netinet/sctp.h>
120 #include <netinet/sctp_var.h>
121 #include <netinet6/sctp6_var.h>
124 #include <netinet6/ip6protosw.h>
127 * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
129 FEATURE(inet6, "Internet Protocol version 6");
131 extern struct domain inet6domain;
132 static struct pr_usrreqs nousrreqs;
135 #define PR_ABRTACPTDIS 0
137 /* Spacer for loadable protocols. */
138 #define IP6PROTOSPACER \
140 .pr_domain = &inet6domain, \
141 .pr_protocol = PROTO_SPACER, \
142 .pr_usrreqs = &nousrreqs \
145 struct protosw inet6sw[] = {
148 .pr_domain = &inet6domain,
149 .pr_protocol = IPPROTO_IPV6,
151 .pr_slowtimo = frag6_slowtimo,
152 .pr_drain = frag6_drain,
153 .pr_usrreqs = &nousrreqs,
156 .pr_type = SOCK_DGRAM,
157 .pr_domain = &inet6domain,
158 .pr_protocol = IPPROTO_UDP,
159 .pr_flags = PR_ATOMIC|PR_ADDR,
160 .pr_input = udp6_input,
161 .pr_ctlinput = udp6_ctlinput,
162 .pr_ctloutput = ip6_ctloutput,
163 #ifndef INET /* Do not call initialization twice. */
166 .pr_usrreqs = &udp6_usrreqs,
169 .pr_type = SOCK_STREAM,
170 .pr_domain = &inet6domain,
171 .pr_protocol = IPPROTO_TCP,
172 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN,
173 .pr_input = tcp6_input,
174 .pr_ctlinput = tcp6_ctlinput,
175 .pr_ctloutput = tcp_ctloutput,
176 #ifndef INET /* don't call initialization and timeout routines twice */
178 .pr_slowtimo = tcp_slowtimo,
180 .pr_drain = tcp_drain,
181 .pr_usrreqs = &tcp6_usrreqs,
185 .pr_type = SOCK_SEQPACKET,
186 .pr_domain = &inet6domain,
187 .pr_protocol = IPPROTO_SCTP,
188 .pr_flags = PR_WANTRCVD|PR_LASTHDR,
189 .pr_input = sctp6_input,
190 .pr_ctlinput = sctp6_ctlinput,
191 .pr_ctloutput = sctp_ctloutput,
192 .pr_drain = sctp_drain,
193 #ifndef INET /* Do not call initialization twice. */
194 .pr_init = sctp_init,
196 .pr_usrreqs = &sctp6_usrreqs
199 .pr_type = SOCK_STREAM,
200 .pr_domain = &inet6domain,
201 .pr_protocol = IPPROTO_SCTP,
202 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LASTHDR,
203 .pr_input = sctp6_input,
204 .pr_ctlinput = sctp6_ctlinput,
205 .pr_ctloutput = sctp_ctloutput,
206 .pr_drain = sctp_drain,
207 .pr_usrreqs = &sctp6_usrreqs
211 .pr_type = SOCK_DGRAM,
212 .pr_domain = &inet6domain,
213 .pr_protocol = IPPROTO_UDPLITE,
214 .pr_flags = PR_ATOMIC|PR_ADDR,
215 .pr_input = udp6_input,
216 .pr_ctlinput = udplite6_ctlinput,
217 .pr_ctloutput = udp_ctloutput,
218 #ifndef INET /* Do not call initialization twice. */
219 .pr_init = udplite_init,
221 .pr_usrreqs = &udp6_usrreqs,
225 .pr_domain = &inet6domain,
226 .pr_protocol = IPPROTO_RAW,
227 .pr_flags = PR_ATOMIC|PR_ADDR,
228 .pr_input = rip6_input,
229 .pr_output = rip6_output,
230 .pr_ctlinput = rip6_ctlinput,
231 .pr_ctloutput = rip6_ctloutput,
232 #ifndef INET /* Do not call initialization twice. */
235 .pr_usrreqs = &rip6_usrreqs
239 .pr_domain = &inet6domain,
240 .pr_protocol = IPPROTO_ICMPV6,
241 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
242 .pr_input = icmp6_input,
243 .pr_output = rip6_output,
244 .pr_ctlinput = rip6_ctlinput,
245 .pr_ctloutput = rip6_ctloutput,
246 .pr_fasttimo = icmp6_fasttimo,
247 .pr_slowtimo = icmp6_slowtimo,
248 .pr_usrreqs = &rip6_usrreqs
252 .pr_domain = &inet6domain,
253 .pr_protocol = IPPROTO_DSTOPTS,
254 .pr_flags = PR_ATOMIC|PR_ADDR,
255 .pr_input = dest6_input,
256 .pr_usrreqs = &nousrreqs
260 .pr_domain = &inet6domain,
261 .pr_protocol = IPPROTO_ROUTING,
262 .pr_flags = PR_ATOMIC|PR_ADDR,
263 .pr_input = route6_input,
264 .pr_usrreqs = &nousrreqs
268 .pr_domain = &inet6domain,
269 .pr_protocol = IPPROTO_FRAGMENT,
270 .pr_flags = PR_ATOMIC|PR_ADDR,
271 .pr_input = frag6_input,
272 .pr_usrreqs = &nousrreqs
277 .pr_domain = &inet6domain,
278 .pr_protocol = IPPROTO_IPV4,
279 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
280 .pr_input = encap6_input,
281 .pr_output = rip6_output,
282 .pr_ctloutput = rip6_ctloutput,
283 .pr_init = encap_init,
284 .pr_usrreqs = &rip6_usrreqs
289 .pr_domain = &inet6domain,
290 .pr_protocol = IPPROTO_IPV6,
291 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
292 .pr_input = encap6_input,
293 .pr_output = rip6_output,
294 .pr_ctloutput = rip6_ctloutput,
295 .pr_init = encap_init,
296 .pr_usrreqs = &rip6_usrreqs
300 .pr_domain = &inet6domain,
301 .pr_protocol = IPPROTO_GRE,
302 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
303 .pr_input = encap6_input,
304 .pr_output = rip6_output,
305 .pr_ctloutput = rip6_ctloutput,
306 .pr_init = encap_init,
307 .pr_usrreqs = &rip6_usrreqs
311 .pr_domain = &inet6domain,
312 .pr_protocol = IPPROTO_PIM,
313 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
314 .pr_input = encap6_input,
315 .pr_output = rip6_output,
316 .pr_ctloutput = rip6_ctloutput,
317 .pr_usrreqs = &rip6_usrreqs
319 /* Spacer n-times for loadable protocols. */
331 .pr_domain = &inet6domain,
332 .pr_flags = PR_ATOMIC|PR_ADDR,
333 .pr_input = rip6_input,
334 .pr_output = rip6_output,
335 .pr_ctloutput = rip6_ctloutput,
336 .pr_usrreqs = &rip6_usrreqs
340 extern int in6_inithead(void **, int);
342 extern int in6_detachhead(void **, int);
345 struct domain inet6domain = {
346 .dom_family = AF_INET6,
347 .dom_name = "internet6",
348 .dom_protosw = (struct protosw *)inet6sw,
349 .dom_protoswNPROTOSW = (struct protosw *)&inet6sw[nitems(inet6sw)],
351 .dom_rtattach = rn6_mpath_inithead,
353 .dom_rtattach = in6_inithead,
356 .dom_rtdetach = in6_detachhead,
358 .dom_ifattach = in6_domifattach,
359 .dom_ifdetach = in6_domifdetach,
360 .dom_ifmtu = in6_domifmtu
363 VNET_DOMAIN_SET(inet6);
366 * Internet configuration info
368 #ifndef IPV6FORWARDING
370 #define IPV6FORWARDING 1 /* forward IP6 packets not for us */
372 #define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */
373 #endif /* GATEWAY6 */
374 #endif /* !IPV6FORWARDING */
376 #ifndef IPV6_SENDREDIRECTS
377 #define IPV6_SENDREDIRECTS 1
380 VNET_DEFINE(int, ip6_forwarding) = IPV6FORWARDING; /* act as router? */
381 VNET_DEFINE(int, ip6_sendredirects) = IPV6_SENDREDIRECTS;
382 VNET_DEFINE(int, ip6_defhlim) = IPV6_DEFHLIM;
383 VNET_DEFINE(int, ip6_defmcasthlim) = IPV6_DEFAULT_MULTICAST_HOPS;
384 VNET_DEFINE(int, ip6_accept_rtadv) = 0;
385 VNET_DEFINE(int, ip6_no_radr) = 0;
386 VNET_DEFINE(int, ip6_norbit_raif) = 0;
387 VNET_DEFINE(int, ip6_rfc6204w3) = 0;
388 VNET_DEFINE(int, ip6_maxfragpackets); /* initialized in frag6.c:frag6_init() */
389 VNET_DEFINE(int, ip6_maxfrags); /* initialized in frag6.c:frag6_init() */
390 VNET_DEFINE(int, ip6_log_interval) = 5;
391 VNET_DEFINE(int, ip6_hdrnestlimit) = 15;/* How many header options will we
393 VNET_DEFINE(int, ip6_dad_count) = 1; /* DupAddrDetectionTransmits */
394 VNET_DEFINE(int, ip6_auto_flowlabel) = 1;
395 VNET_DEFINE(int, ip6_use_deprecated) = 1;/* allow deprecated addr
397 VNET_DEFINE(int, ip6_rr_prune) = 5; /* router renumbering prefix
398 * walk list every 5 sec. */
399 VNET_DEFINE(int, ip6_mcast_pmtu) = 0; /* enable pMTU discovery for multicast? */
400 VNET_DEFINE(int, ip6_v6only) = 1;
402 VNET_DEFINE(time_t, ip6_log_time) = (time_t)0L;
404 VNET_DEFINE(int, ip6stealth) = 0;
406 VNET_DEFINE(int, nd6_onlink_ns_rfc4861) = 0;/* allow 'on-link' nd6 NS
411 * BSDI4 defines these variables in in_proto.c...
412 * XXX: what if we don't define INET? Should we define pmtu6_expire
413 * or so? (jinmei@kame.net 19990310)
415 VNET_DEFINE(int, pmtu_expire) = 60*10;
416 VNET_DEFINE(int, pmtu_probe) = 60*2;
418 /* ICMPV6 parameters */
419 VNET_DEFINE(int, icmp6_rediraccept) = 1;/* accept and process redirects */
420 VNET_DEFINE(int, icmp6_redirtimeout) = 10 * 60; /* 10 minutes */
421 VNET_DEFINE(int, icmp6errppslim) = 100; /* 100pps */
422 /* control how to respond to NI queries */
423 VNET_DEFINE(int, icmp6_nodeinfo) =
424 (ICMP6_NODEINFO_FQDNOK|ICMP6_NODEINFO_NODEADDROK);
425 VNET_DEFINE(int, icmp6_nodeinfo_oldmcprefix) = 1;
428 * sysctl related items.
430 SYSCTL_NODE(_net, PF_INET6, inet6, CTLFLAG_RW, 0,
434 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6, CTLFLAG_RW, 0, "IP6");
435 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6, CTLFLAG_RW, 0, "ICMP6");
436 SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6, CTLFLAG_RW, 0, "UDP6");
437 SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6, CTLFLAG_RW, 0, "TCP6");
439 SYSCTL_NODE(_net_inet6, IPPROTO_SCTP, sctp6, CTLFLAG_RW, 0, "SCTP6");
441 #if defined(IPSEC) || defined(IPSEC_SUPPORT)
442 SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6, CTLFLAG_RW, 0, "IPSEC6");
447 sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS)
451 val = V_ip6_temp_preferred_lifetime;
452 error = sysctl_handle_int(oidp, &val, 0, req);
453 if (error != 0 || !req->newptr)
455 if (val < V_ip6_desync_factor + V_ip6_temp_regen_advance)
457 V_ip6_temp_preferred_lifetime = val;
462 sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS)
466 val = V_ip6_temp_valid_lifetime;
467 error = sysctl_handle_int(oidp, &val, 0, req);
468 if (error != 0 || !req->newptr)
470 if (val < V_ip6_temp_preferred_lifetime)
472 V_ip6_temp_valid_lifetime = val;
476 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING, forwarding,
477 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_forwarding), 0,
478 "Enable forwarding of IPv6 packets between interfaces");
479 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS, redirect,
480 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_sendredirects), 0,
481 "Send ICMPv6 redirects for unforwardable IPv6 packets");
482 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM, hlim,
483 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defhlim), 0,
484 "Default hop limit to use for outgoing IPv6 packets");
485 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_STATS, stats, struct ip6stat,
487 "IP6 statistics (struct ip6stat, netinet6/ip6_var.h)");
488 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS, maxfragpackets,
489 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfragpackets), 0,
490 "Default maximum number of outstanding fragmented IPv6 packets. "
491 "A value of 0 means no fragmented packets will be accepted, while a "
492 "a value of -1 means no limit");
493 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV, accept_rtadv,
494 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_accept_rtadv), 0,
495 "Default value of per-interface flag for accepting ICMPv6 RA messages");
496 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NO_RADR, no_radr,
497 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_no_radr), 0,
498 "Default value of per-interface flag to control whether routers "
499 "sending ICMPv6 RA messages on that interface are added into the "
500 "default router list");
501 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_NORBIT_RAIF, norbit_raif,
502 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_norbit_raif), 0,
503 "Always set clear the R flag in ICMPv6 NA messages when accepting RA "
505 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RFC6204W3, rfc6204w3,
506 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rfc6204w3), 0,
507 "Accept the default router list from ICMPv6 RA messages even "
508 "when packet forwarding is enabled");
509 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL, log_interval,
510 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_log_interval), 0,
511 "Frequency in seconds at which to log IPv6 forwarding errors");
512 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT, hdrnestlimit,
513 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_hdrnestlimit), 0,
514 "Default maximum number of IPv6 extension headers permitted on "
515 "incoming IPv6 packets, 0 for no artificial limit");
516 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT, dad_count,
517 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_dad_count), 0,
518 "Number of ICMPv6 NS messages sent during duplicate address detection");
519 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL, auto_flowlabel,
520 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_flowlabel), 0,
521 "Provide an IPv6 flowlabel in outbound packets");
522 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM, defmcasthlim,
523 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_defmcasthlim), 0,
524 "Default hop limit for IPv6 multicast packets originating from this "
526 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION, kame_version,
527 CTLFLAG_RD, __KAME_VERSION, 0,
528 "KAME version string");
529 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED, use_deprecated,
530 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_deprecated), 0,
531 "Allow the use of addresses whose preferred lifetimes have expired");
532 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, rr_prune,
533 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_rr_prune), 0,
534 ""); /* XXX unused */
535 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR, use_tempaddr,
536 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_tempaddr), 0,
537 "Create RFC3041 temporary addresses for autoconfigured addresses");
538 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
539 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW,
540 NULL, 0, sysctl_ip6_temppltime, "I",
541 "Maximum preferred lifetime for temporary addresses");
542 SYSCTL_PROC(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime,
543 CTLFLAG_VNET | CTLTYPE_INT | CTLFLAG_RW,
544 NULL, 0, sysctl_ip6_tempvltime, "I",
545 "Maximum valid lifetime for temporary addresses");
546 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY, v6only,
547 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_v6only), 0,
548 "Restrict AF_INET6 sockets to IPv6 addresses only");
549 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL, auto_linklocal,
550 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_auto_linklocal), 0,
551 "Default value of per-interface flag for automatically adding an IPv6 "
552 "link-local address to interfaces when attached");
553 SYSCTL_VNET_PCPUSTAT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats,
554 struct rip6stat, rip6stat,
555 "Raw IP6 statistics (struct rip6stat, netinet6/raw_ip6.h)");
556 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR, prefer_tempaddr,
557 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_prefer_tempaddr), 0,
558 "Prefer RFC3041 temporary addresses in source address selection");
559 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE, use_defaultzone,
560 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_use_defzone), 0,
561 "Use the default scope zone when none is specified");
562 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGS, maxfrags,
563 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_maxfrags), 0,
564 "Maximum allowed number of outstanding IPv6 packet fragments");
565 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU, mcast_pmtu,
566 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(ip6_mcast_pmtu), 0,
567 "Enable path MTU discovery for multicast packets");
569 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_STEALTH, stealth, CTLFLAG_VNET | CTLFLAG_RW,
570 &VNET_NAME(ip6stealth), 0,
571 "Forward IPv6 packets without decrementing their TTL");
574 /* net.inet6.icmp6 */
575 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT, rediraccept,
576 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_rediraccept), 0,
577 "Accept ICMPv6 redirect messages");
578 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT, redirtimeout,
579 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_redirtimeout), 0,
580 ""); /* XXX unused */
581 SYSCTL_VNET_PCPUSTAT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats,
582 struct icmp6stat, icmp6stat,
583 "ICMPv6 statistics (struct icmp6stat, netinet/icmp6.h)");
584 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE, nd6_prune,
585 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_prune), 0,
586 "Frequency in seconds of checks for expired prefixes and routers");
587 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY, nd6_delay,
588 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_delay), 0,
589 "Delay in seconds before probing for reachability");
590 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES, nd6_umaxtries,
591 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_umaxtries), 0,
592 "Number of ICMPv6 NS messages sent during reachability detection");
593 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES, nd6_mmaxtries,
594 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_mmaxtries), 0,
595 "Number of ICMPv6 NS messages sent during address resolution");
596 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK, nd6_useloopback,
597 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_useloopback), 0,
598 "Create a loopback route when configuring an IPv6 address");
599 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO, nodeinfo,
600 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6_nodeinfo), 0,
601 "Mask of enabled RF4620 node information query types");
602 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO_OLDMCPREFIX,
603 nodeinfo_oldmcprefix, CTLFLAG_VNET | CTLFLAG_RW,
604 &VNET_NAME(icmp6_nodeinfo_oldmcprefix), 0,
605 "Join old IPv6 NI group address in draft-ietf-ipngwg-icmp-name-lookup "
606 "for compatibility with KAME implementation");
607 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT, errppslimit,
608 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(icmp6errppslim), 0,
609 "Maximum number of ICMPv6 error messages per second");
610 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT, nd6_maxnudhint,
611 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_maxnudhint), 0,
612 ""); /* XXX unused */
613 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG, nd6_debug,
614 CTLFLAG_VNET | CTLFLAG_RW, &VNET_NAME(nd6_debug), 0,
615 "Log NDP debug messages");
616 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861,
617 nd6_onlink_ns_rfc4861, CTLFLAG_VNET | CTLFLAG_RW,
618 &VNET_NAME(nd6_onlink_ns_rfc4861), 0,
619 "Accept 'on-link' ICMPv6 NS messages in compliance with RFC 4861");