in6_proto.c revision 1.116
1 /* $NetBSD: in6_proto.c,v 1.116 2017/02/16 08:12:44 knakahara 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 1.116 2017/02/16 08:12:44 knakahara 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 84 #include <netinet/in.h> 85 #include <netinet/in_systm.h> 86 #include <netinet/in_var.h> 87 #include <netinet/ip_encap.h> 88 #include <netinet/ip.h> 89 #include <netinet/ip_var.h> 90 #include <netinet/in_pcb.h> 91 #include <netinet/ip6.h> 92 #include <netinet6/ip6_var.h> 93 #include <netinet/icmp6.h> 94 #include <netinet6/in6_pcb.h> 95 96 #include <netinet/tcp.h> 97 #include <netinet/tcp_fsm.h> 98 #include <netinet/tcp_seq.h> 99 #include <netinet/tcp_timer.h> 100 #include <netinet/tcp_var.h> 101 #include <netinet/tcpip.h> 102 #include <netinet/tcp_debug.h> 103 104 #include <netinet6/udp6.h> 105 #include <netinet6/udp6_var.h> 106 107 #ifdef DCCP 108 #include <netinet/dccp.h> 109 #include <netinet/dccp_var.h> 110 #include <netinet6/dccp6_var.h> 111 #endif 112 113 #ifdef SCTP 114 #include <netinet/sctp_pcb.h> 115 #include <netinet/sctp.h> 116 #include <netinet/sctp_var.h> 117 #include <netinet6/sctp6_var.h> 118 #endif 119 120 #include <netinet6/pim6_var.h> 121 122 #ifdef IPSEC 123 #include <netipsec/ipsec.h> 124 #include <netipsec/ipsec6.h> 125 #include <netipsec/key.h> 126 #endif /* IPSEC */ 127 128 129 #include "carp.h" 130 #if NCARP > 0 131 #include <netinet/ip_carp.h> 132 #endif 133 134 #include "etherip.h" 135 #if NETHERIP > 0 136 #include <netinet6/ip6_etherip.h> 137 #endif 138 139 #include <netinet6/ip6protosw.h> 140 141 #include <net/net_osdep.h> 142 143 /* 144 * TCP/IP protocol family: IP6, ICMP6, UDP, TCP. 145 */ 146 147 DOMAIN_DEFINE(inet6domain); /* forward declare and add to link set */ 148 149 /* Wrappers to acquire kernel_lock. */ 150 151 PR_WRAP_CTLINPUT(rip6_ctlinput) 152 PR_WRAP_CTLINPUT(encap6_ctlinput) 153 PR_WRAP_CTLINPUT(udp6_ctlinput) 154 PR_WRAP_CTLINPUT(tcp6_ctlinput) 155 156 #define rip6_ctlinput rip6_ctlinput_wrapper 157 #define encap6_ctlinput encap6_ctlinput_wrapper 158 #define udp6_ctlinput udp6_ctlinput_wrapper 159 #define tcp6_ctlinput tcp6_ctlinput_wrapper 160 161 PR_WRAP_CTLOUTPUT(rip6_ctloutput) 162 PR_WRAP_CTLOUTPUT(tcp_ctloutput) 163 PR_WRAP_CTLOUTPUT(udp6_ctloutput) 164 PR_WRAP_CTLOUTPUT(icmp6_ctloutput) 165 166 #define rip6_ctloutput rip6_ctloutput_wrapper 167 #define tcp_ctloutput tcp_ctloutput_wrapper 168 #define udp6_ctloutput udp6_ctloutput_wrapper 169 #define icmp6_ctloutput icmp6_ctloutput_wrapper 170 171 #if defined(DCCP) 172 PR_WRAP_CTLINPUT(dccp6_ctlinput) 173 PR_WRAP_CTLOUTPUT(dccp_ctloutput) 174 175 #define dccp6_ctlinput dccp6_ctlinput_wrapper 176 #define dccp_ctloutput dccp_ctloutput_wrapper 177 #endif 178 179 #if defined(SCTP) 180 PR_WRAP_CTLINPUT(sctp6_ctlinput) 181 PR_WRAP_CTLOUTPUT(sctp_ctloutput) 182 183 #define sctp6_ctlinput sctp6_ctlinput_wrapper 184 #define sctp_ctloutput sctp_ctloutput_wrapper 185 #endif 186 187 #if defined(IPSEC) 188 PR_WRAP_CTLINPUT(ah6_ctlinput) 189 190 #define ah6_ctlinput ah6_ctlinput_wrapper 191 #endif 192 193 #if defined(IPSEC) 194 PR_WRAP_CTLINPUT(esp6_ctlinput) 195 196 #define esp6_ctlinput esp6_ctlinput_wrapper 197 #endif 198 199 static void 200 tcp6_init(void) 201 { 202 203 icmp6_mtudisc_callback_register(tcp6_mtudisc_callback); 204 205 tcp_init_common(sizeof(struct ip6_hdr)); 206 } 207 208 const struct ip6protosw inet6sw[] = { 209 { .pr_domain = &inet6domain, 210 .pr_protocol = IPPROTO_IPV6, 211 .pr_init = ip6_init, 212 .pr_fasttimo = frag6_fasttimo, 213 .pr_slowtimo = frag6_slowtimo, 214 .pr_drain = frag6_drainstub, 215 }, 216 { .pr_type = SOCK_RAW, 217 .pr_domain = &inet6domain, 218 .pr_protocol = IPPROTO_ICMPV6, 219 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 220 .pr_input = icmp6_input, 221 .pr_ctlinput = rip6_ctlinput, 222 .pr_ctloutput = icmp6_ctloutput, 223 .pr_usrreqs = &rip6_usrreqs, 224 .pr_init = icmp6_init, 225 }, 226 { .pr_type = SOCK_DGRAM, 227 .pr_domain = &inet6domain, 228 .pr_protocol = IPPROTO_UDP, 229 .pr_flags = PR_ATOMIC|PR_ADDR|PR_PURGEIF, 230 .pr_input = udp6_input, 231 .pr_ctlinput = udp6_ctlinput, 232 .pr_ctloutput = udp6_ctloutput, 233 .pr_usrreqs = &udp6_usrreqs, 234 .pr_init = udp6_init, 235 }, 236 { .pr_type = SOCK_STREAM, 237 .pr_domain = &inet6domain, 238 .pr_protocol = IPPROTO_TCP, 239 .pr_flags = PR_CONNREQUIRED|PR_WANTRCVD|PR_LISTEN|PR_ABRTACPTDIS|PR_PURGEIF, 240 .pr_input = tcp6_input, 241 .pr_ctlinput = tcp6_ctlinput, 242 .pr_ctloutput = tcp_ctloutput, 243 .pr_usrreqs = &tcp_usrreqs, 244 .pr_init = tcp6_init, 245 .pr_fasttimo = tcp_fasttimo, 246 .pr_drain = tcp_drainstub, 247 }, 248 #ifdef DCCP 249 { .pr_type = SOCK_CONN_DGRAM, 250 .pr_domain = &inet6domain, 251 .pr_protocol = IPPROTO_DCCP, 252 .pr_flags = PR_CONNREQUIRED|PR_ATOMIC|PR_LISTEN, 253 .pr_input = dccp6_input, 254 .pr_ctlinput = dccp6_ctlinput, 255 .pr_ctloutput = dccp_ctloutput, 256 .pr_usrreqs = &dccp6_usrreqs, 257 #ifndef INET 258 .pr_init = dccp_init, 259 #endif 260 }, 261 #endif /* DCCP */ 262 #ifdef SCTP 263 { .pr_type = SOCK_DGRAM, 264 .pr_domain = &inet6domain, 265 .pr_protocol = IPPROTO_SCTP, 266 .pr_flags = PR_ADDR_OPT|PR_WANTRCVD, 267 .pr_input = sctp6_input, 268 .pr_ctlinput = sctp6_ctlinput, 269 .pr_ctloutput = sctp_ctloutput, 270 .pr_usrreqs = &sctp6_usrreqs, 271 .pr_drain = sctp_drain, 272 }, 273 { .pr_type = SOCK_SEQPACKET, 274 .pr_domain = &inet6domain, 275 .pr_protocol = IPPROTO_SCTP, 276 .pr_flags = PR_ADDR_OPT|PR_WANTRCVD, 277 .pr_input = sctp6_input, 278 .pr_ctlinput = sctp6_ctlinput, 279 .pr_ctloutput = sctp_ctloutput, 280 .pr_drain = sctp_drain, 281 }, 282 { .pr_type = SOCK_STREAM, 283 .pr_domain = &inet6domain, 284 .pr_protocol = IPPROTO_SCTP, 285 .pr_flags = PR_CONNREQUIRED|PR_ADDR_OPT|PR_WANTRCVD|PR_LISTEN, 286 .pr_input = sctp6_input, 287 .pr_ctlinput = sctp6_ctlinput, 288 .pr_ctloutput = sctp_ctloutput, 289 .pr_drain = sctp_drain, 290 }, 291 #endif /* SCTP */ 292 { .pr_type = SOCK_RAW, 293 .pr_domain = &inet6domain, 294 .pr_protocol = IPPROTO_RAW, 295 .pr_flags = PR_ATOMIC|PR_ADDR|PR_PURGEIF, 296 .pr_input = rip6_input, 297 .pr_ctlinput = rip6_ctlinput, 298 .pr_ctloutput = rip6_ctloutput, 299 .pr_usrreqs = &rip6_usrreqs, 300 }, 301 #ifdef GATEWAY 302 { .pr_domain = &inet6domain, 303 .pr_protocol = IPPROTO_IPV6, 304 .pr_slowtimo = ip6flow_slowtimo, 305 .pr_init = ip6flow_poolinit, 306 }, 307 #endif /* GATEWAY */ 308 { .pr_type = SOCK_RAW, 309 .pr_domain = &inet6domain, 310 .pr_protocol = IPPROTO_DSTOPTS, 311 .pr_flags = PR_ATOMIC|PR_ADDR, 312 .pr_input = dest6_input, 313 }, 314 { .pr_type = SOCK_RAW, 315 .pr_domain = &inet6domain, 316 .pr_protocol = IPPROTO_ROUTING, 317 .pr_flags = PR_ATOMIC|PR_ADDR, 318 .pr_input = route6_input, 319 }, 320 { .pr_type = SOCK_RAW, 321 .pr_domain = &inet6domain, 322 .pr_protocol = IPPROTO_FRAGMENT, 323 .pr_flags = PR_ATOMIC|PR_ADDR, 324 .pr_input = frag6_input, 325 }, 326 #ifdef IPSEC 327 { .pr_type = SOCK_RAW, 328 .pr_domain = &inet6domain, 329 .pr_protocol = IPPROTO_AH, 330 .pr_flags = PR_ATOMIC|PR_ADDR, 331 .pr_input = ipsec6_common_input, 332 .pr_ctlinput = ah6_ctlinput, 333 }, 334 { .pr_type = SOCK_RAW, 335 .pr_domain = &inet6domain, 336 .pr_protocol = IPPROTO_ESP, 337 .pr_flags = PR_ATOMIC|PR_ADDR, 338 .pr_input = ipsec6_common_input, 339 .pr_ctlinput = esp6_ctlinput, 340 }, 341 { .pr_type = SOCK_RAW, 342 .pr_domain = &inet6domain, 343 .pr_protocol = IPPROTO_IPCOMP, 344 .pr_flags = PR_ATOMIC|PR_ADDR, 345 .pr_input = ipsec6_common_input, 346 }, 347 #endif /* IPSEC */ 348 #ifdef INET 349 { .pr_type = SOCK_RAW, 350 .pr_domain = &inet6domain, 351 .pr_protocol = IPPROTO_IPV4, 352 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 353 .pr_input = encap6_input, 354 .pr_ctlinput = encap6_ctlinput, 355 .pr_ctloutput = rip6_ctloutput, 356 .pr_usrreqs = &rip6_usrreqs, 357 .pr_init = encap_init, 358 }, 359 #endif 360 { .pr_type = SOCK_RAW, 361 .pr_domain = &inet6domain, 362 .pr_protocol = IPPROTO_IPV6, 363 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 364 .pr_input = encap6_input, 365 .pr_ctlinput = encap6_ctlinput, 366 .pr_ctloutput = rip6_ctloutput, 367 .pr_usrreqs = &rip6_usrreqs, 368 .pr_init = encap_init, 369 }, 370 #if NETHERIP > 0 371 { .pr_type = SOCK_RAW, 372 .pr_domain = &inet6domain, 373 .pr_protocol = IPPROTO_ETHERIP, 374 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 375 .pr_input = ip6_etherip_input, 376 .pr_ctlinput = rip6_ctlinput, 377 .pr_ctloutput = rip6_ctloutput, 378 .pr_usrreqs = &rip6_usrreqs, 379 }, 380 #endif 381 #if NCARP > 0 382 { .pr_type = SOCK_RAW, 383 .pr_domain = &inet6domain, 384 .pr_protocol = IPPROTO_CARP, 385 .pr_flags = PR_ATOMIC|PR_ADDR, 386 .pr_input = carp6_proto_input, 387 .pr_ctloutput = rip6_ctloutput, 388 .pr_usrreqs = &rip6_usrreqs, 389 }, 390 #endif /* NCARP */ 391 { .pr_type = SOCK_RAW, 392 .pr_domain = &inet6domain, 393 .pr_protocol = IPPROTO_L2TP, 394 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 395 .pr_input = encap6_input, 396 .pr_ctlinput = rip6_ctlinput, 397 .pr_ctloutput = rip6_ctloutput, 398 .pr_usrreqs = &rip6_usrreqs, 399 .pr_init = encap_init, 400 }, 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_ctloutput = rip6_ctloutput, 407 .pr_usrreqs = &rip6_usrreqs, 408 .pr_init = pim6_init, 409 }, 410 /* raw wildcard */ 411 { .pr_type = SOCK_RAW, 412 .pr_domain = &inet6domain, 413 .pr_flags = PR_ATOMIC|PR_ADDR|PR_LASTHDR, 414 .pr_input = rip6_input, 415 .pr_ctloutput = rip6_ctloutput, 416 .pr_usrreqs = &rip6_usrreqs, 417 .pr_init = rip6_init, 418 }, 419 }; 420 421 static const struct sockaddr_in6 in6_any = { 422 .sin6_len = sizeof(in6_any) 423 , .sin6_family = AF_INET6 424 , .sin6_port = 0 425 , .sin6_flowinfo = 0 426 , .sin6_addr = IN6ADDR_ANY_INIT 427 , .sin6_scope_id = 0 428 }; 429 430 bool in6_present = false; 431 static void 432 in6_dom_init(void) 433 { 434 435 in6_present = true; 436 } 437 438 struct domain inet6domain = { 439 .dom_family = AF_INET6, .dom_name = "internet6", 440 .dom_init = in6_dom_init, .dom_externalize = NULL, .dom_dispose = NULL, 441 .dom_protosw = (const struct protosw *)inet6sw, 442 .dom_protoswNPROTOSW = (const struct protosw *)&inet6sw[sizeof(inet6sw)/sizeof(inet6sw[0])], 443 .dom_rtattach = rt_inithead, 444 .dom_rtoffset = offsetof(struct sockaddr_in6, sin6_addr) << 3, 445 .dom_maxrtkey = sizeof(struct ip_pack6), 446 .dom_if_up = in6_if_up, .dom_if_down = in6_if_down, 447 .dom_ifattach = in6_domifattach, .dom_ifdetach = in6_domifdetach, 448 .dom_if_link_state_change = in6_if_link_state_change, 449 .dom_ifqueues = { NULL, NULL }, 450 .dom_link = { NULL }, 451 .dom_mowner = MOWNER_INIT("",""), 452 .dom_sa_cmpofs = offsetof(struct sockaddr_in6, sin6_addr), 453 .dom_sa_cmplen = sizeof(struct in6_addr), 454 .dom_sa_any = (const struct sockaddr *)&in6_any, 455 .dom_sockaddr_externalize = sockaddr_in6_externalize, 456 .dom_rtcache = LIST_HEAD_INITIALIZER(inet6domain.dom_rtcache) 457 }; 458 459 #if 0 460 int 461 sockaddr_in6_cmp(const struct sockaddr *lsa, const struct sockaddr *rsa) 462 { 463 uint_fast8_t len; 464 const uint_fast8_t addrofs = offsetof(struct sockaddr_in6, sin6_addr), 465 addrend = addrofs + sizeof(struct in6_addr); 466 int rc; 467 const struct sockaddr_in6 *lsin6, *rsin6; 468 469 lsin6 = satocsin6(lsa); 470 rsin6 = satocsin6(rsa); 471 472 len = MIN(addrend, MIN(lsin6->sin6_len, rsin6->sin6_len)); 473 474 if (len > addrofs && 475 (rc = memcmp(&lsin6->sin6_addr, &rsin6->sin6_addr, 476 len - addrofs)) != 0) 477 return rc; 478 479 return lsin6->sin6_len - rsin6->sin6_len; 480 } 481 #endif 482 483 /* 484 * Internet configuration info 485 */ 486 #ifndef IPV6FORWARDING 487 #ifdef GATEWAY6 488 #define IPV6FORWARDING 1 /* forward IP6 packets not for us */ 489 #else 490 #define IPV6FORWARDING 0 /* don't forward IP6 packets not for us */ 491 #endif /* GATEWAY6 */ 492 #endif /* !IPV6FORWARDING */ 493 494 int ip6_forwarding = IPV6FORWARDING; /* act as router? */ 495 int ip6_sendredirects = 1; 496 int ip6_defhlim = IPV6_DEFHLIM; 497 int ip6_defmcasthlim = IPV6_DEFAULT_MULTICAST_HOPS; 498 int ip6_accept_rtadv = 0; /* "IPV6FORWARDING ? 0 : 1" is dangerous */ 499 int ip6_maxfragpackets = 200; 500 int ip6_maxfrags = 200; 501 int ip6_log_interval = 5; 502 int ip6_hdrnestlimit = 50; /* appropriate? */ 503 int ip6_dad_count = 1; /* DupAddrDetectionTransmits */ 504 int ip6_auto_flowlabel = 1; 505 int ip6_use_deprecated = 1; /* allow deprecated addr (RFC2462 5.5.4) */ 506 int ip6_rr_prune = 5; /* router renumbering prefix 507 * walk list every 5 sec. */ 508 int ip6_mcast_pmtu = 0; /* enable pMTU discovery for multicast? */ 509 int ip6_v6only = 1; 510 int ip6_neighborgcthresh = 2048; /* Threshold # of NDP entries for GC */ 511 int ip6_maxifprefixes = 16; /* Max acceptable prefixes via RA per IF */ 512 int ip6_maxifdefrouters = 16; /* Max acceptable def routers via RA */ 513 int ip6_maxdynroutes = 4096; /* Max # of routes created via redirect */ 514 515 int ip6_keepfaith = 0; 516 time_t ip6_log_time = 0; 517 int ip6_rtadv_maxroutes = 100; /* (arbitrary) initial maximum number of 518 * routes via rtadv expected to be 519 * significantly larger than common use. 520 * if you need to count: 3 extra initial 521 * routes, plus 1 per interface after the 522 * first one, then one per non-linklocal 523 * prefix */ 524 525 /* icmp6 */ 526 /* 527 * BSDI4 defines these variables in in_proto.c... 528 * XXX: what if we don't define INET? Should we define pmtu6_expire 529 * or so? (jinmei (at) kame.net 19990310) 530 */ 531 int pmtu_expire = 60*10; 532 533 /* raw IP6 parameters */ 534 /* 535 * Nominal space allocated to a raw ip socket. 536 */ 537 #define RIPV6SNDQ 8192 538 #define RIPV6RCVQ 8192 539 540 u_long rip6_sendspace = RIPV6SNDQ; 541 u_long rip6_recvspace = RIPV6RCVQ; 542 543 /* ICMPV6 parameters */ 544 int icmp6_rediraccept = 1; /* accept and process redirects */ 545 int icmp6_redirtimeout = 10 * 60; /* 10 minutes */ 546 int icmp6errppslim = 100; /* 100pps */ 547 int icmp6_nodeinfo = 1; /* enable/disable NI response */ 548
Indexes created Thu Sep 25 06:09:39 GMT 2025