in6_proto.c revision 1.103.4.4
1 /* $NetBSD: in6_proto.c,v 1.103.4.4 2015/12/27 12:10:07 skrll Exp $ */ 2 /* $KAME: in6_proto.c,v 1.66 2000/10/10 15:35:47 itojun Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the project nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright (c) 1982, 1986, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. Neither the name of the University nor the names of its contributors 46 * may be used to endorse or promote products derived from this software 47 * without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 * 61 * @(#)in_proto.c 8.1 (Berkeley) 6/10/93 62 */ 63 64 #include <sys/cdefs.h> 65 __KERNEL_RCSID(0, "$NetBSD: in6_proto.c,v 1.103.4.4 2015/12/27 12:10:07 skrll Exp $"); 66 67 #ifdef _KERNEL_OPT 68 #include "opt_gateway.h" 69 #include "opt_inet.h" 70 #include "opt_ipsec.h" 71 #include "opt_dccp.h" 72 #include "opt_sctp.h" 73 #endif 74 75 #include <sys/param.h> 76 #include <sys/socket.h> 77 #include <sys/protosw.h> 78 #include <sys/kernel.h> 79 #include <sys/domain.h> 80 #include <sys/mbuf.h> 81 82 #include <net/if.h> 83 #include <net/radix.h> 84 #include <net/route.h> 85 86 #include <netinet/in.h> 87 #include <netinet/in_systm.h> 88 #include <netinet/in_var.h> 89 #include <netinet/ip_encap.h> 90 #include <netinet/ip.h> 91 #include <netinet/ip_var.h> 92 #include <netinet/in_pcb.h> 93 #include <netinet/ip6.h> 94 #include <netinet6/ip6_var.h> 95 #include <netinet/icmp6.h> 96 #include <netinet6/in6_pcb.h> 97 98 #include <netinet/tcp.h> 99 #include <netinet/tcp_fsm.h> 100 #include <netinet/tcp_seq.h> 101 #include <netinet/tcp_timer.h> 102 #include <netinet/tcp_var.h> 103 #include <netinet/tcpip.h> 104 #include <netinet/tcp_debug.h> 105 106 #include <netinet6/udp6.h> 107 #include <netinet6/udp6_var.h> 108 109 #ifdef DCCP 110 #include <netinet/dccp.h> 111 #include <netinet/dccp_var.h> 112 #include <netinet6/dccp6_var.h> 113 #endif 114 115 #ifdef SCTP 116 #include <netinet/sctp_pcb.h> 117 #include <netinet/sctp.h> 118 #include <netinet/sctp_var.h> 119 #include <netinet6/sctp6_var.h> 120 #endif 121 122 #include <netinet6/pim6_var.h> 123 124 #include <netinet6/nd6.h> 125 126 #ifdef IPSEC 127 #include <netipsec/ipsec.h> 128 #include <netipsec/ipsec6.h> 129 #include <netipsec/key.h> 130 #endif /* IPSEC */ 131 132 133 #include "carp.h" 134 #if NCARP > 0 135 #include <netinet/ip_carp.h> 136 #endif 137 138 #include "etherip.h" 139 #if NETHERIP > 0 140 #include <netinet6/ip6_etherip.h> 141 #endif 142 143 #include <netinet6/ip6protosw.h> 144 145 #include <net/net_osdep.h> 146 147 /* 148 * TCP/IP protocol family: IP6, ICMP6, UDP, TCP. 149 */ 150 151 DOMAIN_DEFINE(inet6domain); /* forward declare and add to link set */ 152 153 /* Wrappers to acquire kernel_lock. */ 154 155 PR_WRAP_CTLINPUT(rip6_ctlinput) 156 PR_WRAP_CTLINPUT(encap6_ctlinput) 157 PR_WRAP_CTLINPUT(udp6_ctlinput) 158 PR_WRAP_CTLINPUT(tcp6_ctlinput) 159 160 #define rip6_ctlinput rip6_ctlinput_wrapper 161 #define encap6_ctlinput encap6_ctlinput_wrapper 162 #define udp6_ctlinput udp6_ctlinput_wrapper 163 #define tcp6_ctlinput tcp6_ctlinput_wrapper 164 165 PR_WRAP_CTLOUTPUT(rip6_ctloutput) 166 PR_WRAP_CTLOUTPUT(tcp_ctloutput) 167 PR_WRAP_CTLOUTPUT(udp6_ctloutput) 168 PR_WRAP_CTLOUTPUT(icmp6_ctloutput) 169 170 #define rip6_ctloutput rip6_ctloutput_wrapper 171 #define tcp_ctloutput tcp_ctloutput_wrapper 172 #define udp6_ctloutput udp6_ctloutput_wrapper 173 #define icmp6_ctloutput icmp6_ctloutput_wrapper 174 175 #if defined(DCCP) 176 PR_WRAP_CTLINPUT(dccp6_ctlinput) 177 PR_WRAP_CTLOUTPUT(dccp_ctloutput) 178 179 #define dccp6_ctlinput dccp6_ctlinput_wrapper 180 #define dccp_ctloutput dccp_ctloutput_wrapper 181 #endif 182 183 #if defined(SCTP) 184 PR_WRAP_CTLINPUT(sctp6_ctlinput) 185 PR_WRAP_CTLOUTPUT(sctp_ctloutput) 186 187 #define sctp6_ctlinput sctp6_ctlinput_wrapper 188 #define sctp_ctloutput sctp_ctloutput_wrapper 189 #endif 190 191 #if defined(IPSEC) 192 PR_WRAP_CTLINPUT(ah6_ctlinput) 193 194 #define ah6_ctlinput ah6_ctlinput_wrapper 195 #endif 196 197 #if defined(IPSEC) 198 PR_WRAP_CTLINPUT(esp6_ctlinput) 199 200 #define esp6_ctlinput esp6_ctlinput_wrapper 201 #endif 202 203 static void 204 tcp6_init(void) 205 { 206 207 icmp6_mtudisc_callback_register(tcp6_mtudisc_callback); 208 209 tcp_init_common(sizeof(struct ip6_hdr)); 210 } 211 212 const struct ip6protosw inet6sw[] = { 213 { .pr_domain = &inet6domain, 214 .pr_protocol = IPPROTO_IPV6, 215 .pr_init = ip6_init, 216 .pr_fasttimo = frag6_fasttimo, 217 .pr_slowtimo = frag6_slowtimo, 218 .pr_drain = frag6_drainstub, 219 }, 220 { .pr_type = SOCK_DGRAM, 221 .pr_domain = &inet6domain, 222 .pr_protocol = IPPROTO_UDP, 223 .pr_flags = PR_ATOMIC|PR_ADDR|PR_PURGEIF, 224 .pr_input = udp6_input, 225 .pr_ctlinput = udp6_ctlinput, 226 .pr_ctloutput = udp6_ctloutput, 227 .pr_usrreqs = &udp6_usrreqs, 228 .pr_init = udp6_init, 229 }, 230 { .pr_type = SOCK_STREAM, 231 .pr_domain = &inet6domain, 232 .pr_protocol = IPPROTO_TCP, 233 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN|PR_ABRTACPTDIS|PR_PURGEIF, 234 .pr_input = tcp6_input, 235 .pr_ctlinput = tcp6_ctlinput, 236 .pr_ctloutput = tcp_ctloutput, 237 .pr_usrreqs = &tcp_usrreqs, 238 .pr_init = tcp6_init, 239 .pr_fasttimo = tcp_fasttimo, 240 .pr_drain = tcp_drainstub, 241 }, 242 #ifdef DCCP 243 { .pr_type = SOCK_CONN_DGRAM, 244 .pr_domain = &inet6domain, 245 .pr_protocol = IPPROTO_DCCP, 246 .pr_flags = PR_CONNREQUIRED|PR_ATOMIC|PR_LISTEN, 247 .pr_input = dccp6_input, 248 .pr_ctlinput = dccp6_ctlinput, 249 .pr_ctloutput = dccp_ctloutput, 250 .pr_usrreqs = &dccp6_usrreqs, 251 #ifndef INET 252 .pr_init = dccp_init, 253 #endif 254 }, 255 #endif /* DCCP */ 256 #ifdef SCTP 257 { .pr_type = SOCK_DGRAM, 258 .pr_domain = &inet6domain, 259 .pr_protocol = IPPROTO_SCTP, 260 .pr_flags = PR_ADDR_OPT|PR_WANTRCVD, 261 .pr_input = sctp6_input, 262 .pr_ctlinput = sctp6_ctlinput, 263 .pr_ctloutput = sctp_ctloutput, 264 .pr_usrreqs = &sctp6_usrreqs, 265 .pr_drain = sctp_drain, 266 }, 267 { .pr_type = SOCK_SEQPACKET, 268 .pr_domain = &inet6domain, 269 .pr_protocol = IPPROTO_SCTP, 270 .pr_flags = PR_ADDR_OPT|PR_WANTRCVD, 271 .pr_input = sctp6_input, 272 .pr_ctlinput = sctp6_ctlinput, 273 .pr_ctloutput = sctp_ctloutput, 274 .pr_drain = sctp_drain, 275 }, 276 { .pr_type = SOCK_STREAM, 277 .pr_domain = &inet6domain, 278 .pr_protocol = IPPROTO_SCTP, 279 .pr_flags = PR_CONNREQUIRED|PR_ADDR_OPT|PR_WANTRCVD|PR_LISTEN, 280 .pr_input = sctp6_input, 281 .pr_ctlinput = sctp6_ctlinput, 282 .pr_ctloutput = sctp_ctloutput, 283 .pr_drain = sctp_drain, 284 }, 285 #endif /* SCTP */ 286 { .pr_type = SOCK_RAW, 287 .pr_domain = &inet6domain, 288 .pr_protocol = IPPROTO_RAW, 289 .pr_flags = PR_ATOMIC|PR_ADDR|PR_PURGEIF, 290 .pr_input = rip6_input, 291 .pr_output = rip6_output, 292 .pr_ctlinput = rip6_ctlinput, 293 .pr_ctloutput = rip6_ctloutput, 294 .pr_usrreqs = &rip6_usrreqs, 295 }, 296 #ifdef GATEWAY 297 { .pr_domain = &inet6domain, 298 .pr_protocol = IPPROTO_IPV6, 299 .pr_slowtimo = ip6flow_slowtimo, 300 .pr_init = ip6flow_poolinit, 301 }, 302 #endif /* GATEWAY */ 303 { .pr_type = SOCK_RAW, 304 .pr_domain = &inet6domain, 305 .pr_protocol = IPPROTO_ICMPV6, 306 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 307 .pr_input = icmp6_input, 308 .pr_output = rip6_output, 309 .pr_ctlinput = rip6_ctlinput, 310 .pr_ctloutput = icmp6_ctloutput, 311 .pr_usrreqs = &rip6_usrreqs, 312 .pr_init = icmp6_init, 313 }, 314 { .pr_type = SOCK_RAW, 315 .pr_domain = &inet6domain, 316 .pr_protocol = IPPROTO_DSTOPTS, 317 .pr_flags = PR_ATOMIC|PR_ADDR, 318 .pr_input = dest6_input, 319 }, 320 { .pr_type = SOCK_RAW, 321 .pr_domain = &inet6domain, 322 .pr_protocol = IPPROTO_ROUTING, 323 .pr_flags = PR_ATOMIC|PR_ADDR, 324 .pr_input = route6_input, 325 }, 326 { .pr_type = SOCK_RAW, 327 .pr_domain = &inet6domain, 328 .pr_protocol = IPPROTO_FRAGMENT, 329 .pr_flags = PR_ATOMIC|PR_ADDR, 330 .pr_input = frag6_input, 331 }, 332 #ifdef IPSEC 333 { .pr_type = SOCK_RAW, 334 .pr_domain = &inet6domain, 335 .pr_protocol = IPPROTO_AH, 336 .pr_flags = PR_ATOMIC|PR_ADDR, 337 .pr_input = ipsec6_common_input, 338 .pr_ctlinput = ah6_ctlinput, 339 }, 340 { .pr_type = SOCK_RAW, 341 .pr_domain = &inet6domain, 342 .pr_protocol = IPPROTO_ESP, 343 .pr_flags = PR_ATOMIC|PR_ADDR, 344 .pr_input = ipsec6_common_input, 345 .pr_ctlinput = esp6_ctlinput, 346 }, 347 { .pr_type = SOCK_RAW, 348 .pr_domain = &inet6domain, 349 .pr_protocol = IPPROTO_IPCOMP, 350 .pr_flags = PR_ATOMIC|PR_ADDR, 351 .pr_input = ipsec6_common_input, 352 }, 353 #endif /* IPSEC */ 354 #ifdef INET 355 { .pr_type = SOCK_RAW, 356 .pr_domain = &inet6domain, 357 .pr_protocol = IPPROTO_IPV4, 358 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 359 .pr_input = encap6_input, 360 .pr_output = rip6_output, 361 .pr_ctlinput = encap6_ctlinput, 362 .pr_ctloutput = rip6_ctloutput, 363 .pr_usrreqs = &rip6_usrreqs, 364 .pr_init = encap_init, 365 }, 366 #endif 367 { .pr_type = SOCK_RAW, 368 .pr_domain = &inet6domain, 369 .pr_protocol = IPPROTO_IPV6, 370 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 371 .pr_input = encap6_input, 372 .pr_output = rip6_output, 373 .pr_ctlinput = encap6_ctlinput, 374 .pr_ctloutput = rip6_ctloutput, 375 .pr_usrreqs = &rip6_usrreqs, 376 .pr_init = encap_init, 377 }, 378 #if NETHERIP > 0 379 { .pr_type = SOCK_RAW, 380 .pr_domain = &inet6domain, 381 .pr_protocol = IPPROTO_ETHERIP, 382 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 383 .pr_input = ip6_etherip_input, 384 .pr_output = rip6_output, 385 .pr_ctlinput = rip6_ctlinput, 386 .pr_ctloutput = rip6_ctloutput, 387 .pr_usrreqs = &rip6_usrreqs, 388 }, 389 #endif 390 #if NCARP > 0 391 { .pr_type = SOCK_RAW, 392 .pr_domain = &inet6domain, 393 .pr_protocol = IPPROTO_CARP, 394 .pr_flags = PR_ATOMIC|PR_ADDR, 395 .pr_input = carp6_proto_input, 396 .pr_output = rip6_output, 397 .pr_ctloutput = rip6_ctloutput, 398 .pr_usrreqs = &rip6_usrreqs, 399 }, 400 #endif /* NCARP */ 401 { .pr_type = SOCK_RAW, 402 .pr_domain = &inet6domain, 403 .pr_protocol = IPPROTO_PIM, 404 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 405 .pr_input = pim6_input, 406 .pr_output = rip6_output, 407 .pr_ctloutput = rip6_ctloutput, 408 .pr_usrreqs = &rip6_usrreqs, 409 .pr_init = pim6_init, 410 }, 411 /* raw wildcard */ 412 { .pr_type = SOCK_RAW, 413 .pr_domain = &inet6domain, 414 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 415 .pr_input = rip6_input, 416 .pr_output = rip6_output, 417 .pr_ctloutput = rip6_ctloutput, 418 .pr_usrreqs = &rip6_usrreqs, 419 .pr_init = rip6_init, 420 }, 421 }; 422 423 static const struct sockaddr_in6 in6_any = { 424 .sin6_len = sizeof(in6_any) 425 , .sin6_family = AF_INET6 426 , .sin6_port = 0 427 , .sin6_flowinfo = 0 428 , .sin6_addr = IN6ADDR_ANY_INIT 429 , .sin6_scope_id = 0 430 }; 431 432 bool in6_present = false; 433 static void 434 in6_init(void) 435 { 436 437 in6_present = true; 438 } 439 440 struct domain inet6domain = { 441 .dom_family = AF_INET6, .dom_name = "internet6", 442 .dom_init = in6_init, .dom_externalize = NULL, .dom_dispose = NULL, 443 .dom_protosw = (const struct protosw *)inet6sw, 444 .dom_protoswNPROTOSW = (const struct protosw *)&inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])], 445 .dom_rtattach = rt_inithead, 446 .dom_rtoffset = offsetof(struct sockaddr_in6, sin6_addr) << 3, 447 .dom_maxrtkey = sizeof(struct ip_pack6), 448 .dom_if_up = in6_if_up, .dom_if_down = in6_if_down, 449 .dom_ifattach = in6_domifattach, .dom_ifdetach = in6_domifdetach, 450 .dom_if_link_state_change = in6_if_link_state_change, 451 .dom_ifqueues = { NULL, NULL }, 452 .dom_link = { NULL }, 453 .dom_mowner = MOWNER_INIT("",""), 454 .dom_sa_cmpofs = offsetof(struct sockaddr_in6, sin6_addr), 455 .dom_sa_cmplen = sizeof(struct in6_addr), 456 .dom_sa_any = (const struct sockaddr *)&in6_any, 457 .dom_sockaddr_externalize = sockaddr_in6_externalize, 458 .dom_rtcache = LIST_HEAD_INITIALIZER(inet6domain.dom_rtcache) 459 }; 460 461 #if 0 462 int 463 sockaddr_in6_cmp(const struct sockaddr *lsa, const struct sockaddr *rsa) 464 { 465 uint_fast8_t len; 466 const uint_fast8_t addrofs = offsetof(struct sockaddr_in6, sin6_addr), 467 addrend = addrofs + sizeof(struct in6_addr); 468 int rc; 469 const struct sockaddr_in6 *lsin6, *rsin6; 470 471 lsin6 = satocsin6(lsa); 472 rsin6 = satocsin6(rsa); 473 474 len = MIN(addrend, MIN(lsin6->sin6_len, rsin6->sin6_len)); 475 476 if (len > addrofs && 477 (rc = memcmp(&lsin6->sin6_addr, &rsin6->sin6_addr, 478 len - addrofs)) != 0) 479 return rc; 480 481 return lsin6->sin6_len - rsin6->sin6_len; 482 } 483 #endif 484 485 /* 486 * Internet configuration info 487 */ 488 #ifndef IPV6FORWARDING 489 #ifdef GATEWAY6 490 #define IPV6FORWARDING 1 /* forward IP6 packets not for us */ 491 #else 492 #define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */ 493 #endif /* GATEWAY6 */ 494 #endif /* !IPV6FORWARDING */ 495 496 int ip6_forwarding = IPV6FORWARDING; /* act as router? */ 497 int ip6_sendredirects = 1; 498 int ip6_defhlim = IPV6_DEFHLIM; 499 int ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS; 500 int ip6_accept_rtadv = 0; /* "IPV6FORWARDING ? 0 : 1" is dangerous */ 501 int ip6_maxfragpackets = 200; 502 int ip6_maxfrags = 200; 503 int ip6_log_interval = 5; 504 int ip6_hdrnestlimit = 50; /* appropriate? */ 505 int ip6_dad_count = 1; /* DupAddrDetectionTransmits */ 506 int ip6_auto_flowlabel = 1; 507 int ip6_use_deprecated = 1; /* allow deprecated addr (RFC2462 5.5.4) */ 508 int ip6_rr_prune = 5; /* router renumbering prefix 509 * walk list every 5 sec. */ 510 int ip6_mcast_pmtu = 0; /* enable pMTU discovery for multicast? */ 511 int ip6_v6only = 1; 512 int ip6_neighborgcthresh = 2048; /* Threshold # of NDP entries for GC */ 513 int ip6_maxifprefixes = 16; /* Max acceptable prefixes via RA per IF */ 514 int ip6_maxifdefrouters = 16; /* Max acceptable def routers via RA */ 515 int ip6_maxdynroutes = 4096; /* Max # of routes created via redirect */ 516 517 int ip6_keepfaith = 0; 518 time_t ip6_log_time = 0; 519 int ip6_rtadv_maxroutes = 100; /* (arbitrary) initial maximum number of 520 * routes via rtadv expected to be 521 * significantly larger than common use. 522 * if you need to count: 3 extra initial 523 * routes, plus 1 per interface after the 524 * first one, then one per non-linklocal 525 * prefix */ 526 527 /* icmp6 */ 528 /* 529 * BSDI4 defines these variables in in_proto.c... 530 * XXX: what if we don't define INET? Should we define pmtu6_expire 531 * or so? (jinmei (at) kame.net 19990310) 532 */ 533 int pmtu_expire = 60*10; 534 535 /* raw IP6 parameters */ 536 /* 537 * Nominal space allocated to a raw ip socket. 538 */ 539 #define RIPV6SNDQ 8192 540 #define RIPV6RCVQ 8192 541 542 u_long rip6_sendspace = RIPV6SNDQ; 543 u_long rip6_recvspace = RIPV6RCVQ; 544 545 /* ICMPV6 parameters */ 546 int icmp6_rediraccept = 1; /* accept and process redirects */ 547 int icmp6_redirtimeout = 10 * 60; /* 10 minutes */ 548 int icmp6errppslim = 100; /* 100pps */ 549 int icmp6_nodeinfo = 1; /* enable/disable NI response */ 550
Indexes created Wed Oct 22 13:09:56 GMT 2025