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"
73 #include <sys/param.h>
74 #include <sys/socket.h>
75 #include <sys/socketvar.h>
76 #include <sys/protosw.h>
77 #include <sys/kernel.h>
78 #include <sys/domain.h>
80 #include <sys/systm.h>
81 #include <sys/sysctl.h>
84 #include <net/radix.h>
85 #include <net/route.h>
87 #include <netinet/in.h>
88 #include <netinet/in_systm.h>
89 #include <netinet/in_var.h>
90 #include <netinet/ip_encap.h>
91 #include <netinet/ip.h>
92 #include <netinet/ip_var.h>
93 #include <netinet/ip6.h>
94 #include <netinet6/ip6_var.h>
95 #include <netinet/icmp6.h>
97 #include <netinet/tcp.h>
98 #include <netinet/tcp_timer.h>
99 #include <netinet/tcp_var.h>
100 #include <netinet/udp.h>
101 #include <netinet/udp_var.h>
102 #include <netinet6/tcp6_var.h>
103 #include <netinet6/raw_ip6.h>
104 #include <netinet6/udp6_var.h>
105 #include <netinet6/pim6_var.h>
106 #include <netinet6/nd6.h>
109 #include <netinet/ip_carp.h>
113 #include <netinet/in_pcb.h>
114 #include <netinet/sctp_pcb.h>
115 #include <netinet/sctp.h>
116 #include <netinet/sctp_var.h>
117 #include <netinet6/sctp6_var.h>
121 #include <netipsec/ipsec.h>
122 #include <netipsec/ipsec6.h>
125 #include <netinet6/ip6protosw.h>
128 * TCP/IP protocol family: IP6, ICMP6, UDP, TCP.
131 extern struct domain inet6domain;
132 static struct pr_usrreqs nousrreqs;
135 #define PR_ABRTACPTDIS 0
137 struct ip6protosw inet6sw[] = {
140 .pr_domain = &inet6domain,
141 .pr_protocol = IPPROTO_IPV6,
143 .pr_slowtimo = frag6_slowtimo,
144 .pr_drain = frag6_drain,
145 .pr_usrreqs = &nousrreqs,
148 .pr_type = SOCK_DGRAM,
149 .pr_domain = &inet6domain,
150 .pr_protocol = IPPROTO_UDP,
151 .pr_flags = PR_ATOMIC|PR_ADDR,
152 .pr_input = udp6_input,
153 .pr_ctlinput = udp6_ctlinput,
154 .pr_ctloutput = ip6_ctloutput,
155 .pr_usrreqs = &udp6_usrreqs,
158 .pr_type = SOCK_STREAM,
159 .pr_domain = &inet6domain,
160 .pr_protocol = IPPROTO_TCP,
161 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN,
162 .pr_input = tcp6_input,
163 .pr_ctlinput = tcp6_ctlinput,
164 .pr_ctloutput = tcp_ctloutput,
165 #ifndef INET /* don't call initialization and timeout routines twice */
167 .pr_fasttimo = tcp_fasttimo,
168 .pr_slowtimo = tcp_slowtimo,
170 .pr_drain = tcp_drain,
171 .pr_usrreqs = &tcp6_usrreqs,
175 .pr_type = SOCK_DGRAM,
176 .pr_domain = &inet6domain,
177 .pr_protocol = IPPROTO_SCTP,
178 .pr_flags = PR_WANTRCVD,
179 .pr_input = sctp6_input,
180 .pr_ctlinput = sctp6_ctlinput,
181 .pr_ctloutput = sctp_ctloutput,
182 .pr_drain = sctp_drain,
183 .pr_usrreqs = &sctp6_usrreqs
186 .pr_type = SOCK_SEQPACKET,
187 .pr_domain = &inet6domain,
188 .pr_protocol = IPPROTO_SCTP,
189 .pr_flags = PR_WANTRCVD,
190 .pr_input = sctp6_input,
191 .pr_ctlinput = sctp6_ctlinput,
192 .pr_ctloutput = sctp_ctloutput,
193 .pr_drain = sctp_drain,
194 .pr_usrreqs = &sctp6_usrreqs
198 .pr_type = SOCK_STREAM,
199 .pr_domain = &inet6domain,
200 .pr_protocol = IPPROTO_SCTP,
201 .pr_flags = PR_WANTRCVD,
202 .pr_input = sctp6_input,
203 .pr_ctlinput = sctp6_ctlinput,
204 .pr_ctloutput = sctp_ctloutput,
205 .pr_drain = sctp_drain,
206 .pr_usrreqs = &sctp6_usrreqs
211 .pr_domain = &inet6domain,
212 .pr_protocol = IPPROTO_RAW,
213 .pr_flags = PR_ATOMIC|PR_ADDR,
214 .pr_input = rip6_input,
215 .pr_output = rip6_output,
216 .pr_ctlinput = rip6_ctlinput,
217 .pr_ctloutput = rip6_ctloutput,
218 .pr_usrreqs = &rip6_usrreqs
222 .pr_domain = &inet6domain,
223 .pr_protocol = IPPROTO_ICMPV6,
224 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
225 .pr_input = icmp6_input,
226 .pr_output = rip6_output,
227 .pr_ctlinput = rip6_ctlinput,
228 .pr_ctloutput = rip6_ctloutput,
229 .pr_init = icmp6_init,
230 .pr_fasttimo = icmp6_fasttimo,
231 .pr_usrreqs = &rip6_usrreqs
235 .pr_domain = &inet6domain,
236 .pr_protocol = IPPROTO_DSTOPTS,
237 .pr_flags = PR_ATOMIC|PR_ADDR,
238 .pr_input = dest6_input,
239 .pr_usrreqs = &nousrreqs
243 .pr_domain = &inet6domain,
244 .pr_protocol = IPPROTO_ROUTING,
245 .pr_flags = PR_ATOMIC|PR_ADDR,
246 .pr_input = route6_input,
247 .pr_usrreqs = &nousrreqs
251 .pr_domain = &inet6domain,
252 .pr_protocol = IPPROTO_FRAGMENT,
253 .pr_flags = PR_ATOMIC|PR_ADDR,
254 .pr_input = frag6_input,
255 .pr_usrreqs = &nousrreqs
260 .pr_domain = &inet6domain,
261 .pr_protocol = IPPROTO_AH,
262 .pr_flags = PR_ATOMIC|PR_ADDR,
263 .pr_input = ipsec6_common_input,
264 .pr_usrreqs = &nousrreqs,
268 .pr_domain = &inet6domain,
269 .pr_protocol = IPPROTO_ESP,
270 .pr_flags = PR_ATOMIC|PR_ADDR,
271 .pr_input = ipsec6_common_input,
272 .pr_ctlinput = esp6_ctlinput,
273 .pr_usrreqs = &nousrreqs,
277 .pr_domain = &inet6domain,
278 .pr_protocol = IPPROTO_IPCOMP,
279 .pr_flags = PR_ATOMIC|PR_ADDR,
280 .pr_input = ipsec6_common_input,
281 .pr_usrreqs = &nousrreqs,
287 .pr_domain = &inet6domain,
288 .pr_protocol = IPPROTO_IPV4,
289 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
290 .pr_input = encap6_input,
291 .pr_output = rip6_output,
292 .pr_ctloutput = rip6_ctloutput,
293 .pr_init = encap_init,
294 .pr_usrreqs = &rip6_usrreqs
299 .pr_domain = &inet6domain,
300 .pr_protocol = IPPROTO_IPV6,
301 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
302 .pr_input = encap6_input,
303 .pr_output = rip6_output,
304 .pr_ctloutput = rip6_ctloutput,
305 .pr_init = encap_init,
306 .pr_usrreqs = &rip6_usrreqs
310 .pr_domain = &inet6domain,
311 .pr_protocol = IPPROTO_PIM,
312 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR,
313 .pr_input = encap6_input,
314 .pr_output = rip6_output,
315 .pr_ctloutput = rip6_ctloutput,
316 .pr_usrreqs = &rip6_usrreqs
321 .pr_domain = &inet6domain,
322 .pr_protocol = IPPROTO_CARP,
323 .pr_flags = PR_ATOMIC|PR_ADDR,
324 .pr_input = carp6_input,
325 .pr_output = rip6_output,
326 .pr_ctloutput = rip6_ctloutput,
327 .pr_usrreqs = &rip6_usrreqs
329 #endif /* DEV_CARP */
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 struct domain inet6domain = {
345 .dom_family = AF_INET6,
346 .dom_name = "internet6",
347 .dom_protosw = (struct protosw *)inet6sw,
348 .dom_protoswNPROTOSW = (struct protosw *)
349 &inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])],
350 .dom_rtattach = in6_inithead,
351 .dom_rtoffset = offsetof(struct sockaddr_in6, sin6_addr) << 3,
352 .dom_maxrtkey = sizeof(struct sockaddr_in6),
353 .dom_ifattach = in6_domifattach,
354 .dom_ifdetach = in6_domifdetach
360 * Internet configuration info
362 #ifndef IPV6FORWARDING
364 #define IPV6FORWARDING 1 /* forward IP6 packets not for us */
366 #define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */
367 #endif /* GATEWAY6 */
368 #endif /* !IPV6FORWARDING */
370 #ifndef IPV6_SENDREDIRECTS
371 #define IPV6_SENDREDIRECTS 1
374 int ip6_forwarding = IPV6FORWARDING; /* act as router? */
375 int ip6_sendredirects = IPV6_SENDREDIRECTS;
376 int ip6_defhlim = IPV6_DEFHLIM;
377 int ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS;
378 int ip6_accept_rtadv = 0; /* "IPV6FORWARDING ? 0 : 1" is dangerous */
379 int ip6_maxfragpackets; /* initialized in frag6.c:frag6_init() */
380 int ip6_maxfrags; /* initialized in frag6.c:frag6_init() */
381 int ip6_log_interval = 5;
382 int ip6_hdrnestlimit = 15; /* How many header options will we process? */
383 int ip6_dad_count = 1; /* DupAddrDetectionTransmits */
384 int ip6_auto_flowlabel = 1;
385 int ip6_gif_hlim = 0;
386 int ip6_use_deprecated = 1; /* allow deprecated addr (RFC2462 5.5.4) */
387 int ip6_rr_prune = 5; /* router renumbering prefix
388 * walk list every 5 sec. */
389 int ip6_mcast_pmtu = 0; /* enable pMTU discovery for multicast? */
392 int ip6_keepfaith = 0;
393 time_t ip6_log_time = (time_t)0L;
397 int nd6_onlink_ns_rfc4861 = 0; /* allow 'on-link' nd6 NS (as in RFC 4861) */
401 * BSDI4 defines these variables in in_proto.c...
402 * XXX: what if we don't define INET? Should we define pmtu6_expire
403 * or so? (jinmei@kame.net 19990310)
405 int pmtu_expire = 60*10;
406 int pmtu_probe = 60*2;
408 /* raw IP6 parameters */
410 * Nominal space allocated to a raw ip socket.
412 #define RIPV6SNDQ 8192
413 #define RIPV6RCVQ 8192
415 u_long rip6_sendspace = RIPV6SNDQ;
416 u_long rip6_recvspace = RIPV6RCVQ;
418 /* ICMPV6 parameters */
419 int icmp6_rediraccept = 1; /* accept and process redirects */
420 int icmp6_redirtimeout = 10 * 60; /* 10 minutes */
421 int icmp6errppslim = 100; /* 100pps */
422 /* control how to respond to NI queries */
423 int icmp6_nodeinfo = (ICMP6_NODEINFO_FQDNOK|ICMP6_NODEINFO_NODEADDROK);
425 /* UDP on IP6 parameters */
426 int udp6_sendspace = 9216; /* really max datagram size */
427 int udp6_recvspace = 40 * (1024 + sizeof(struct sockaddr_in6));
428 /* 40 1K datagrams */
431 * sysctl related items.
433 SYSCTL_NODE(_net, PF_INET6, inet6, CTLFLAG_RW, 0,
437 SYSCTL_NODE(_net_inet6, IPPROTO_IPV6, ip6, CTLFLAG_RW, 0, "IP6");
438 SYSCTL_NODE(_net_inet6, IPPROTO_ICMPV6, icmp6, CTLFLAG_RW, 0, "ICMP6");
439 SYSCTL_NODE(_net_inet6, IPPROTO_UDP, udp6, CTLFLAG_RW, 0, "UDP6");
440 SYSCTL_NODE(_net_inet6, IPPROTO_TCP, tcp6, CTLFLAG_RW, 0, "TCP6");
442 SYSCTL_NODE(_net_inet6, IPPROTO_SCTP, sctp6, CTLFLAG_RW, 0, "SCTP6");
445 SYSCTL_NODE(_net_inet6, IPPROTO_ESP, ipsec6, CTLFLAG_RW, 0, "IPSEC6");
450 sysctl_ip6_temppltime(SYSCTL_HANDLER_ARGS)
455 error = SYSCTL_OUT(req, arg1, sizeof(int));
456 if (error || !req->newptr)
458 old = ip6_temp_preferred_lifetime;
459 error = SYSCTL_IN(req, arg1, sizeof(int));
460 if (ip6_temp_preferred_lifetime <
461 ip6_desync_factor + ip6_temp_regen_advance) {
462 ip6_temp_preferred_lifetime = old;
469 sysctl_ip6_tempvltime(SYSCTL_HANDLER_ARGS)
474 error = SYSCTL_OUT(req, arg1, sizeof(int));
475 if (error || !req->newptr)
477 old = ip6_temp_valid_lifetime;
478 error = SYSCTL_IN(req, arg1, sizeof(int));
479 if (ip6_temp_valid_lifetime < ip6_temp_preferred_lifetime) {
480 ip6_temp_preferred_lifetime = old;
486 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_FORWARDING,
487 forwarding, CTLFLAG_RW, &ip6_forwarding, 0, "");
488 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_SENDREDIRECTS,
489 redirect, CTLFLAG_RW, &ip6_sendredirects, 0, "");
490 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFHLIM,
491 hlim, CTLFLAG_RW, &ip6_defhlim, 0, "");
492 SYSCTL_STRUCT(_net_inet6_ip6, IPV6CTL_STATS, stats, CTLFLAG_RD,
493 &ip6stat, ip6stat, "");
494 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGPACKETS,
495 maxfragpackets, CTLFLAG_RW, &ip6_maxfragpackets, 0, "");
496 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_ACCEPT_RTADV,
497 accept_rtadv, CTLFLAG_RW, &ip6_accept_rtadv, 0, "");
498 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_KEEPFAITH,
499 keepfaith, CTLFLAG_RW, &ip6_keepfaith, 0, "");
500 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_LOG_INTERVAL,
501 log_interval, CTLFLAG_RW, &ip6_log_interval, 0, "");
502 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_HDRNESTLIMIT,
503 hdrnestlimit, CTLFLAG_RW, &ip6_hdrnestlimit, 0, "");
504 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DAD_COUNT,
505 dad_count, CTLFLAG_RW, &ip6_dad_count, 0, "");
506 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_FLOWLABEL,
507 auto_flowlabel, CTLFLAG_RW, &ip6_auto_flowlabel, 0, "");
508 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_DEFMCASTHLIM,
509 defmcasthlim, CTLFLAG_RW, &ip6_defmcasthlim, 0, "");
510 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_GIF_HLIM,
511 gifhlim, CTLFLAG_RW, &ip6_gif_hlim, 0, "");
512 SYSCTL_STRING(_net_inet6_ip6, IPV6CTL_KAME_VERSION,
513 kame_version, CTLFLAG_RD, __KAME_VERSION, 0, "");
514 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEPRECATED,
515 use_deprecated, CTLFLAG_RW, &ip6_use_deprecated, 0, "");
516 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE,
517 rr_prune, CTLFLAG_RW, &ip6_rr_prune, 0, "");
518 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USETEMPADDR,
519 use_tempaddr, CTLFLAG_RW, &ip6_use_tempaddr, 0, "");
520 SYSCTL_OID(_net_inet6_ip6, IPV6CTL_TEMPPLTIME, temppltime,
521 CTLTYPE_INT|CTLFLAG_RW, &ip6_temp_preferred_lifetime, 0,
522 sysctl_ip6_temppltime, "I", "");
523 SYSCTL_OID(_net_inet6_ip6, IPV6CTL_TEMPVLTIME, tempvltime,
524 CTLTYPE_INT|CTLFLAG_RW, &ip6_temp_valid_lifetime, 0,
525 sysctl_ip6_tempvltime, "I", "");
526 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_V6ONLY,
527 v6only, CTLFLAG_RW, &ip6_v6only, 0, "");
528 TUNABLE_INT("net.inet6.ip6.auto_linklocal", &ip6_auto_linklocal);
529 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_AUTO_LINKLOCAL,
530 auto_linklocal, CTLFLAG_RW, &ip6_auto_linklocal, 0, "");
531 SYSCTL_STRUCT(_net_inet6_ip6, IPV6CTL_RIP6STATS, rip6stats, CTLFLAG_RD,
532 &rip6stat, rip6stat, "");
533 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_PREFER_TEMPADDR,
534 prefer_tempaddr, CTLFLAG_RW, &ip6_prefer_tempaddr, 0, "");
535 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_USE_DEFAULTZONE,
536 use_defaultzone, CTLFLAG_RW, &ip6_use_defzone, 0,"");
537 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MAXFRAGS,
538 maxfrags, CTLFLAG_RW, &ip6_maxfrags, 0, "");
539 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_MCAST_PMTU,
540 mcast_pmtu, CTLFLAG_RW, &ip6_mcast_pmtu, 0, "");
542 SYSCTL_INT(_net_inet6_ip6, IPV6CTL_STEALTH, stealth, CTLFLAG_RW,
546 /* net.inet6.icmp6 */
547 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRACCEPT,
548 rediraccept, CTLFLAG_RW, &icmp6_rediraccept, 0, "");
549 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_REDIRTIMEOUT,
550 redirtimeout, CTLFLAG_RW, &icmp6_redirtimeout, 0, "");
551 SYSCTL_STRUCT(_net_inet6_icmp6, ICMPV6CTL_STATS, stats, CTLFLAG_RD,
552 &icmp6stat, icmp6stat, "");
553 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_PRUNE,
554 nd6_prune, CTLFLAG_RW, &nd6_prune, 0, "");
555 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DELAY,
556 nd6_delay, CTLFLAG_RW, &nd6_delay, 0, "");
557 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_UMAXTRIES,
558 nd6_umaxtries, CTLFLAG_RW, &nd6_umaxtries, 0, "");
559 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MMAXTRIES,
560 nd6_mmaxtries, CTLFLAG_RW, &nd6_mmaxtries, 0, "");
561 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_USELOOPBACK,
562 nd6_useloopback, CTLFLAG_RW, &nd6_useloopback, 0, "");
563 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_NODEINFO,
564 nodeinfo, CTLFLAG_RW, &icmp6_nodeinfo, 0, "");
565 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ERRPPSLIMIT,
566 errppslimit, CTLFLAG_RW, &icmp6errppslim, 0, "");
567 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_MAXNUDHINT,
568 nd6_maxnudhint, CTLFLAG_RW, &nd6_maxnudhint, 0, "");
569 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_DEBUG,
570 nd6_debug, CTLFLAG_RW, &nd6_debug, 0, "");
571 SYSCTL_INT(_net_inet6_icmp6, ICMPV6CTL_ND6_ONLINKNSRFC4861,
572 nd6_onlink_ns_rfc4861, CTLFLAG_RW, &nd6_onlink_ns_rfc4861, 0,
573 "Accept 'on-link' nd6 NS in compliance with RFC 4861.");