2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2001 Brian Somers <brian@Awfulhak.org>
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.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #include <sys/param.h>
32 #include <netinet/in_systm.h>
33 #include <netinet/in.h>
34 #include <netinet/ip.h>
35 #include <sys/socket.h>
36 #include <net/route.h>
38 #include <net/if_types.h>
39 #include <net/if_dl.h>
55 #include "throughput.h"
56 #include "slcompress.h"
65 #include "descriptor.h"
87 #define IN6ADDR_LINKLOCAL_MCAST_INIT \
88 {{{ 0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \
89 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }}}
90 static const struct in6_addr in6addr_linklocal_mcast =
91 IN6ADDR_LINKLOCAL_MCAST_INIT;
93 static int ipv6cp_LayerUp(struct fsm *);
94 static void ipv6cp_LayerDown(struct fsm *);
95 static void ipv6cp_LayerStart(struct fsm *);
96 static void ipv6cp_LayerFinish(struct fsm *);
97 static void ipv6cp_InitRestartCounter(struct fsm *, int);
98 static void ipv6cp_SendConfigReq(struct fsm *);
99 static void ipv6cp_SentTerminateReq(struct fsm *);
100 static void ipv6cp_SendTerminateAck(struct fsm *, u_char);
101 static void ipv6cp_DecodeConfig(struct fsm *, u_char *, u_char *, int,
102 struct fsm_decode *);
104 static struct fsm_callbacks ipv6cp_Callbacks = {
109 ipv6cp_InitRestartCounter,
110 ipv6cp_SendConfigReq,
111 ipv6cp_SentTerminateReq,
112 ipv6cp_SendTerminateAck,
114 fsm_NullRecvResetReq,
119 SetInterfaceID(u_char *ifid, int userandom)
121 struct ifaddrs *ifa, *ifap = NULL;
122 struct sockaddr_dl *sdl;
123 const u_long i32_max = 0xffffffff;
126 /* configure an interface ID based on Section 4.1 of RFC 2472 */
127 memset(ifid, 0, IPV6CP_IFIDLEN);
130 * 1) If an IEEE global identifier (EUI-48 or EUI-64) is
131 * available anywhere on the node, it should be used to construct
132 * the tentative Interface-Identifier due to its uniqueness
137 if (getifaddrs(&ifap) < 0)
140 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
143 if (ifa->ifa_addr->sa_family != AF_LINK)
146 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
147 if (sdl->sdl_alen < 6)
149 /* we're only interested in IEEE hardware addresses */
150 switch(sdl->sdl_type) {
154 /* XXX need more cases? */
160 cp = (char *)(sdl->sdl_data + sdl->sdl_nlen);
162 ifid[0] ^= 0x02; /* reverse the u/l bit*/
178 * 2) If an IEEE global identifier is not available a different source
179 * of uniqueness should be used.
180 * XXX: we skip this case.
184 * 3) If a good source of uniqueness cannot be found, it is
185 * recommended that a random number be generated. In this case the
186 * "u" bit of the interface identifier MUST be set to zero (0).
190 r1 = (((u_long)random()) % i32_max) + 1;
191 r2 = (((u_long)random()) % i32_max) + 1;
192 memcpy(ifid, &r1, sizeof(r1));
193 memcpy(ifid + 4, &r2, sizeof(r2));
199 ipcp_SetIPv6address(struct ipv6cp *ipv6cp, u_char *myifid, u_char *hisifid)
201 struct bundle *bundle = ipv6cp->fsm.bundle;
202 struct in6_addr myaddr, hisaddr;
203 struct ncprange myrange, range;
205 struct sockaddr_storage ssdst, ssgw, ssmask;
206 struct sockaddr *sadst, *sagw, *samask;
208 sadst = (struct sockaddr *)&ssdst;
209 sagw = (struct sockaddr *)&ssgw;
210 samask = (struct sockaddr *)&ssmask;
212 memset(&myaddr, '\0', sizeof myaddr);
213 memset(&hisaddr, '\0', sizeof hisaddr);
215 myaddr.s6_addr[0] = 0xfe;
216 myaddr.s6_addr[1] = 0x80;
217 memcpy(&myaddr.s6_addr[8], myifid, IPV6CP_IFIDLEN);
219 myaddr.s6_addr[8] |= 0x02; /* set 'universal' bit */
222 hisaddr.s6_addr[0] = 0xfe;
223 hisaddr.s6_addr[1] = 0x80;
224 memcpy(&hisaddr.s6_addr[8], hisifid, IPV6CP_IFIDLEN);
226 hisaddr.s6_addr[8] |= 0x02; /* set 'universal' bit */
229 ncpaddr_setip6(&ipv6cp->myaddr, &myaddr);
230 ncpaddr_setip6(&ipv6cp->hisaddr, &hisaddr);
231 ncprange_set(&myrange, &ipv6cp->myaddr, 64);
233 if (!iface_Add(bundle->iface, &bundle->ncp, &myrange, &ipv6cp->hisaddr,
234 IFACE_ADD_FIRST|IFACE_FORCE_ADD|IFACE_SYSTEM))
237 if (!Enabled(bundle, OPT_IFACEALIAS))
238 iface_Clear(bundle->iface, &bundle->ncp, AF_INET6,
239 IFACE_CLEAR_ALIASES|IFACE_SYSTEM);
241 ncpaddr_setip6(&addr, &in6addr_linklocal_mcast);
242 ncprange_set(&range, &addr, 32);
243 rt_Set(bundle, RTM_ADD, &range, &ipv6cp->myaddr, 1, 0);
245 if (bundle->ncp.cfg.sendpipe > 0 || bundle->ncp.cfg.recvpipe > 0) {
246 ncprange_getsa(&myrange, &ssgw, &ssmask);
247 if (ncpaddr_isset(&ipv6cp->hisaddr))
248 ncpaddr_getsa(&ipv6cp->hisaddr, &ssdst);
251 rt_Update(bundle, sadst, sagw, samask, NULL, NULL);
254 if (Enabled(bundle, OPT_SROUTES))
255 route_Change(bundle, bundle->ncp.route, &ipv6cp->myaddr, &ipv6cp->hisaddr);
258 if (bundle->radius.valid)
259 route_Change(bundle, bundle->radius.ipv6routes, &ipv6cp->myaddr,
267 ipv6cp_Init(struct ipv6cp *ipv6cp, struct bundle *bundle, struct link *l,
268 const struct fsm_parent *parent)
270 static const char * const timer_names[] =
271 {"IPV6CP restart", "IPV6CP openmode", "IPV6CP stopped"};
274 fsm_Init(&ipv6cp->fsm, "IPV6CP", PROTO_IPV6CP, 1, IPV6CP_MAXCODE, LogIPV6CP,
275 bundle, l, parent, &ipv6cp_Callbacks, timer_names);
277 ipv6cp->cfg.fsm.timeout = DEF_FSMRETRY;
278 ipv6cp->cfg.fsm.maxreq = DEF_FSMTRIES;
279 ipv6cp->cfg.fsm.maxtrm = DEF_FSMTRIES;
281 SetInterfaceID(ipv6cp->my_ifid, 0);
283 SetInterfaceID(ipv6cp->his_ifid, 1);
284 } while (memcmp(ipv6cp->his_ifid, ipv6cp->my_ifid, IPV6CP_IFIDLEN) == 0);
286 if (probe.ipv6_available) {
289 !ipcp_SetIPv6address(ipv6cp, ipv6cp->my_ifid, ipv6cp->his_ifid)) {
292 SetInterfaceID(ipv6cp->my_ifid, 1);
294 && memcmp(ipv6cp->his_ifid, ipv6cp->my_ifid, IPV6CP_IFIDLEN) == 0);
298 throughput_init(&ipv6cp->throughput, SAMPLE_PERIOD);
299 memset(ipv6cp->Queue, '\0', sizeof ipv6cp->Queue);
300 ipv6cp_Setup(ipv6cp);
304 ipv6cp_Destroy(struct ipv6cp *ipv6cp)
306 throughput_destroy(&ipv6cp->throughput);
310 ipv6cp_Setup(struct ipv6cp *ipv6cp)
312 ncpaddr_init(&ipv6cp->myaddr);
313 ncpaddr_init(&ipv6cp->hisaddr);
315 ipv6cp->his_reject = 0;
316 ipv6cp->my_reject = 0;
320 ipv6cp_SetLink(struct ipv6cp *ipv6cp, struct link *l)
322 ipv6cp->fsm.link = l;
326 ipv6cp_Show(struct cmdargs const *arg)
328 struct ipv6cp *ipv6cp = &arg->bundle->ncp.ipv6cp;
330 prompt_Printf(arg->prompt, "%s [%s]\n", ipv6cp->fsm.name,
331 State2Nam(ipv6cp->fsm.state));
332 if (ipv6cp->fsm.state == ST_OPENED) {
333 prompt_Printf(arg->prompt, " His side: %s\n",
334 ncpaddr_ntoa(&ipv6cp->hisaddr));
335 prompt_Printf(arg->prompt, " My side: %s\n",
336 ncpaddr_ntoa(&ipv6cp->myaddr));
337 prompt_Printf(arg->prompt, " Queued packets: %lu\n",
338 (unsigned long)ipv6cp_QueueLen(ipv6cp));
341 prompt_Printf(arg->prompt, "\nDefaults:\n");
342 prompt_Printf(arg->prompt, " FSM retry = %us, max %u Config"
343 " REQ%s, %u Term REQ%s\n\n", ipv6cp->cfg.fsm.timeout,
344 ipv6cp->cfg.fsm.maxreq, ipv6cp->cfg.fsm.maxreq == 1 ? "" : "s",
345 ipv6cp->cfg.fsm.maxtrm, ipv6cp->cfg.fsm.maxtrm == 1 ? "" : "s");
347 throughput_disp(&ipv6cp->throughput, arg->prompt);
353 ipv6cp_Input(struct bundle *bundle, struct link *l, struct mbuf *bp)
355 /* Got PROTO_IPV6CP from link */
356 m_settype(bp, MB_IPV6CPIN);
357 if (bundle_Phase(bundle) == PHASE_NETWORK)
358 fsm_Input(&bundle->ncp.ipv6cp.fsm, bp);
360 if (bundle_Phase(bundle) < PHASE_NETWORK)
361 log_Printf(LogIPV6CP, "%s: Error: Unexpected IPV6CP in phase %s"
362 " (ignored)\n", l->name, bundle_PhaseName(bundle));
369 ipv6cp_AddInOctets(struct ipv6cp *ipv6cp, int n)
371 throughput_addin(&ipv6cp->throughput, n);
375 ipv6cp_AddOutOctets(struct ipv6cp *ipv6cp, int n)
377 throughput_addout(&ipv6cp->throughput, n);
381 ipv6cp_IfaceAddrAdded(struct ipv6cp *ipv6cp __unused,
382 const struct iface_addr *addr __unused)
387 ipv6cp_IfaceAddrDeleted(struct ipv6cp *ipv6cp __unused,
388 const struct iface_addr *addr __unused)
393 ipv6cp_InterfaceUp(struct ipv6cp *ipv6cp)
395 if (!ipcp_SetIPv6address(ipv6cp, ipv6cp->my_ifid, ipv6cp->his_ifid)) {
396 log_Printf(LogERROR, "ipv6cp_InterfaceUp: unable to set ipv6 address\n");
400 if (!iface_SetFlags(ipv6cp->fsm.bundle->iface->name, IFF_UP)) {
401 log_Printf(LogERROR, "ipv6cp_InterfaceUp: Can't set the IFF_UP"
402 " flag on %s\n", ipv6cp->fsm.bundle->iface->name);
410 ipv6cp_QueueLen(struct ipv6cp *ipv6cp)
416 for (q = ipv6cp->Queue; q < ipv6cp->Queue + IPV6CP_QUEUES(ipv6cp); q++)
423 ipv6cp_PushPacket(struct ipv6cp *ipv6cp, struct link *l)
425 struct bundle *bundle = ipv6cp->fsm.bundle;
426 struct mqueue *queue;
430 unsigned alivesecs = 0;
432 if (ipv6cp->fsm.state != ST_OPENED)
436 * If ccp is not open but is required, do nothing.
438 if (l->ccp.fsm.state != ST_OPENED && ccp_Required(&l->ccp)) {
439 log_Printf(LogPHASE, "%s: Not transmitting... waiting for CCP\n", l->name);
443 queue = ipv6cp->Queue + IPV6CP_QUEUES(ipv6cp) - 1;
446 bp = m_dequeue(queue);
447 bp = mbuf_Read(bp, &secs, sizeof secs);
449 m_len = m_length(bp);
450 if (!FilterCheck(MBUF_CTOP(bp), AF_INET6, &bundle->filter.alive,
454 bundle_StartIdleTimer(bundle, secs);
456 link_PushPacket(l, bp, bundle, 0, PROTO_IPV6);
457 ipv6cp_AddOutOctets(ipv6cp, m_len);
460 } while (queue-- != ipv6cp->Queue);
466 ipv6cp_LayerUp(struct fsm *fp)
469 struct ipv6cp *ipv6cp = fsm2ipv6cp(fp);
470 char tbuff[NCP_ASCIIBUFFERSIZE];
472 log_Printf(LogIPV6CP, "%s: LayerUp.\n", fp->link->name);
473 if (!ipv6cp_InterfaceUp(ipv6cp))
476 snprintf(tbuff, sizeof tbuff, "%s", ncpaddr_ntoa(&ipv6cp->myaddr));
477 log_Printf(LogIPV6CP, "myaddr %s hisaddr = %s\n",
478 tbuff, ncpaddr_ntoa(&ipv6cp->hisaddr));
481 radius_Account_Set_Ipv6(&fp->bundle->radacct6, ipv6cp->his_ifid);
482 radius_Account(&fp->bundle->radius, &fp->bundle->radacct6,
483 fp->bundle->links, RAD_START, &ipv6cp->throughput);
486 * XXX: Avoid duplicate evaluation of filterid between IPCP and
487 * IPV6CP. When IPCP is enabled and rejected, filterid is not
490 if (!Enabled(fp->bundle, OPT_IPCP)) {
491 if (*fp->bundle->radius.cfg.file && fp->bundle->radius.filterid)
492 system_Select(fp->bundle, fp->bundle->radius.filterid, LINKUPFILE,
498 * XXX this stuff should really live in the FSM. Our config should
499 * associate executable sections in files with events.
501 if (system_Select(fp->bundle, tbuff, LINKUPFILE, NULL, NULL) < 0) {
503 * XXX: Avoid duplicate evaluation of label between IPCP and
504 * IPV6CP. When IPCP is enabled and rejected, label is not
507 if (bundle_GetLabel(fp->bundle) && !Enabled(fp->bundle, OPT_IPCP)) {
508 if (system_Select(fp->bundle, bundle_GetLabel(fp->bundle),
509 LINKUPFILE, NULL, NULL) < 0)
510 system_Select(fp->bundle, "MYADDR6", LINKUPFILE, NULL, NULL);
512 system_Select(fp->bundle, "MYADDR6", LINKUPFILE, NULL, NULL);
515 fp->more.reqs = fp->more.naks = fp->more.rejs = ipv6cp->cfg.fsm.maxreq * 3;
516 log_DisplayPrompts();
522 ipv6cp_LayerDown(struct fsm *fp)
524 /* About to come down */
525 struct ipv6cp *ipv6cp = fsm2ipv6cp(fp);
526 static int recursing;
527 char addr[NCP_ASCIIBUFFERSIZE];
530 snprintf(addr, sizeof addr, "%s", ncpaddr_ntoa(&ipv6cp->myaddr));
531 log_Printf(LogIPV6CP, "%s: LayerDown: %s\n", fp->link->name, addr);
534 radius_Flush(&fp->bundle->radius);
535 radius_Account(&fp->bundle->radius, &fp->bundle->radacct6,
536 fp->bundle->links, RAD_STOP, &ipv6cp->throughput);
539 * XXX: Avoid duplicate evaluation of filterid between IPCP and
540 * IPV6CP. When IPCP is enabled and rejected, filterid is not
543 if (!Enabled(fp->bundle, OPT_IPCP)) {
544 if (*fp->bundle->radius.cfg.file && fp->bundle->radius.filterid)
545 system_Select(fp->bundle, fp->bundle->radius.filterid, LINKDOWNFILE,
551 * XXX this stuff should really live in the FSM. Our config should
552 * associate executable sections in files with events.
554 if (system_Select(fp->bundle, addr, LINKDOWNFILE, NULL, NULL) < 0) {
556 * XXX: Avoid duplicate evaluation of label between IPCP and
557 * IPV6CP. When IPCP is enabled and rejected, label is not
560 if (bundle_GetLabel(fp->bundle) && !Enabled(fp->bundle, OPT_IPCP)) {
561 if (system_Select(fp->bundle, bundle_GetLabel(fp->bundle),
562 LINKDOWNFILE, NULL, NULL) < 0)
563 system_Select(fp->bundle, "MYADDR6", LINKDOWNFILE, NULL, NULL);
565 system_Select(fp->bundle, "MYADDR6", LINKDOWNFILE, NULL, NULL);
568 ipv6cp_Setup(ipv6cp);
574 ipv6cp_LayerStart(struct fsm *fp)
576 /* We're about to start up ! */
577 struct ipv6cp *ipv6cp = fsm2ipv6cp(fp);
579 log_Printf(LogIPV6CP, "%s: LayerStart.\n", fp->link->name);
580 throughput_start(&ipv6cp->throughput, "IPV6CP throughput",
581 Enabled(fp->bundle, OPT_THROUGHPUT));
582 fp->more.reqs = fp->more.naks = fp->more.rejs = ipv6cp->cfg.fsm.maxreq * 3;
583 ipv6cp->peer_tokenreq = 0;
587 ipv6cp_LayerFinish(struct fsm *fp)
590 struct ipv6cp *ipv6cp = fsm2ipv6cp(fp);
592 log_Printf(LogIPV6CP, "%s: LayerFinish.\n", fp->link->name);
593 throughput_stop(&ipv6cp->throughput);
594 throughput_log(&ipv6cp->throughput, LogIPV6CP, NULL);
598 ipv6cp_InitRestartCounter(struct fsm *fp, int what)
600 /* Set fsm timer load */
601 struct ipv6cp *ipv6cp = fsm2ipv6cp(fp);
603 fp->FsmTimer.load = ipv6cp->cfg.fsm.timeout * SECTICKS;
606 fp->restart = ipv6cp->cfg.fsm.maxreq;
609 fp->restart = ipv6cp->cfg.fsm.maxtrm;
618 ipv6cp_SendConfigReq(struct fsm *fp)
620 /* Send config REQ please */
621 struct physical *p = link2physical(fp->link);
622 struct ipv6cp *ipv6cp = fsm2ipv6cp(fp);
623 u_char buff[IPV6CP_IFIDLEN+2];
626 o = (struct fsm_opt *)buff;
628 if ((p && !physical_IsSync(p)) || !REJECTED(ipv6cp, TY_TOKEN)) {
629 memcpy(o->data, ipv6cp->my_ifid, IPV6CP_IFIDLEN);
630 INC_FSM_OPT(TY_TOKEN, IPV6CP_IFIDLEN + 2, o);
633 fsm_Output(fp, CODE_CONFIGREQ, fp->reqid, buff, (u_char *)o - buff,
638 ipv6cp_SentTerminateReq(struct fsm *fp __unused)
640 /* Term REQ just sent by FSM */
644 ipv6cp_SendTerminateAck(struct fsm *fp, u_char id)
646 /* Send Term ACK please */
647 fsm_Output(fp, CODE_TERMACK, id, NULL, 0, MB_IPV6CPOUT);
651 protoname(unsigned proto)
653 static const char *cftypes[] = { "IFACEID", "COMPPROTO" };
655 if (proto > 0 && proto <= sizeof cftypes / sizeof *cftypes)
656 return cftypes[proto - 1];
658 return NumStr(proto, NULL, 0);
662 ipv6cp_ValidateInterfaceID(struct ipv6cp *ipv6cp, u_char *ifid,
663 struct fsm_decode *dec)
666 u_char zero[IPV6CP_IFIDLEN];
668 memset(zero, 0, IPV6CP_IFIDLEN);
670 if (memcmp(ifid, zero, IPV6CP_IFIDLEN) != 0
671 && memcmp(ifid, ipv6cp->my_ifid, IPV6CP_IFIDLEN) != 0)
672 memcpy(ipv6cp->his_ifid, ifid, IPV6CP_IFIDLEN);
674 opt.hdr.id = TY_TOKEN;
675 opt.hdr.len = IPV6CP_IFIDLEN + 2;
676 memcpy(opt.data, &ipv6cp->his_ifid, IPV6CP_IFIDLEN);
677 if (memcmp(ifid, ipv6cp->his_ifid, IPV6CP_IFIDLEN) == 0)
684 ipv6cp_DecodeConfig(struct fsm *fp, u_char *cp, u_char *end, int mode_type,
685 struct fsm_decode *dec)
687 /* Deal with incoming PROTO_IPV6CP */
688 struct ipv6cp *ipv6cp = fsm2ipv6cp(fp);
691 u_char ifid[IPV6CP_IFIDLEN], zero[IPV6CP_IFIDLEN];
694 memset(zero, 0, IPV6CP_IFIDLEN);
696 while (end - cp >= (int)sizeof(opt->hdr)) {
697 if ((opt = fsm_readopt(&cp)) == NULL)
700 snprintf(tbuff, sizeof tbuff, " %s[%d]", protoname(opt->hdr.id),
703 switch (opt->hdr.id) {
705 memcpy(ifid, opt->data, IPV6CP_IFIDLEN);
706 log_Printf(LogIPV6CP, "%s 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", tbuff,
707 ifid[0], ifid[1], ifid[2], ifid[3], ifid[4], ifid[5], ifid[6], ifid[7]);
711 ipv6cp->peer_tokenreq = 1;
712 ipv6cp_ValidateInterfaceID(ipv6cp, ifid, dec);
716 if (memcmp(ifid, zero, IPV6CP_IFIDLEN) == 0) {
717 log_Printf(log_IsKept(LogIPV6CP) ? LogIPV6CP : LogPHASE,
718 "0x0000000000000000: Unacceptable IntefaceID!\n");
719 fsm_Close(&ipv6cp->fsm);
720 } else if (memcmp(ifid, ipv6cp->his_ifid, IPV6CP_IFIDLEN) == 0) {
721 log_Printf(log_IsKept(LogIPV6CP) ? LogIPV6CP : LogPHASE,
722 "0x%02x%02x%02x%02x%02x%02x%02x%02x: "
723 "Unacceptable IntefaceID!\n",
724 ifid[0], ifid[1], ifid[2], ifid[3],
725 ifid[4], ifid[5], ifid[6], ifid[7]);
726 } else if (memcmp(ifid, ipv6cp->my_ifid, IPV6CP_IFIDLEN) != 0) {
728 while (n && !ipcp_SetIPv6address(ipv6cp, ifid, ipv6cp->his_ifid)) {
731 SetInterfaceID(ifid, 1);
732 } while (n && memcmp(ifid, ipv6cp->his_ifid, IPV6CP_IFIDLEN) == 0);
736 log_Printf(log_IsKept(LogIPV6CP) ? LogIPV6CP : LogPHASE,
737 "0x0000000000000000: Unacceptable IntefaceID!\n");
738 fsm_Close(&ipv6cp->fsm);
740 log_Printf(LogIPV6CP, "%s changing IntefaceID: "
741 "0x%02x%02x%02x%02x%02x%02x%02x%02x "
742 "--> 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", tbuff,
743 ipv6cp->my_ifid[0], ipv6cp->my_ifid[1],
744 ipv6cp->my_ifid[2], ipv6cp->my_ifid[3],
745 ipv6cp->my_ifid[4], ipv6cp->my_ifid[5],
746 ipv6cp->my_ifid[6], ipv6cp->my_ifid[7],
747 ifid[0], ifid[1], ifid[2], ifid[3],
748 ifid[4], ifid[5], ifid[6], ifid[7]);
749 memcpy(ipv6cp->my_ifid, ifid, IPV6CP_IFIDLEN);
750 bundle_AdjustFilters(fp->bundle, &ipv6cp->myaddr, NULL);
756 ipv6cp->his_reject |= (1 << opt->hdr.id);
762 if (mode_type != MODE_NOP) {
763 ipv6cp->my_reject |= (1 << opt->hdr.id);
770 if (mode_type != MODE_NOP) {
771 if (mode_type == MODE_REQ && !ipv6cp->peer_tokenreq) {
772 if (dec->rejend == dec->rej && dec->nakend == dec->nak) {
774 * Pretend the peer has requested a TOKEN.
775 * We do this to ensure that we only send one NAK if the only
776 * reason for the NAK is because the peer isn't sending a
777 * TY_TOKEN REQ. This stops us from repeatedly trying to tell
778 * the peer that we have to have an IP address on their end.
780 ipv6cp->peer_tokenreq = 1;
782 memset(ifid, 0, IPV6CP_IFIDLEN);
783 ipv6cp_ValidateInterfaceID(ipv6cp, ifid, dec);
785 fsm_opt_normalise(dec);