2 * Copyright (C) 2003 Yasuhiro Ohara
4 * This file is part of GNU Zebra.
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with GNU Zebra; see the file COPYING. If not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
32 #include "ospf6_proto.h"
33 #include "ospf6_top.h"
34 #include "ospf6_interface.h"
35 #include "ospf6_route.h"
36 #include "ospf6_lsa.h"
37 #include "ospf6_lsdb.h"
38 #include "ospf6_asbr.h"
39 #include "ospf6_zebra.h"
42 unsigned char conf_debug_ospf6_zebra = 0;
44 /* information about zebra. */
45 struct zclient *zclient = NULL;
47 struct in_addr router_id_zebra;
49 /* Router-id update message from zebra. */
51 ospf6_router_id_update_zebra (int command, struct zclient *zclient,
52 zebra_size_t length, vrf_id_t vrf_id)
54 struct prefix router_id;
55 struct ospf6 *o = ospf6;
57 zebra_router_id_update_read(zclient->ibuf,&router_id);
58 router_id_zebra = router_id.u.prefix4;
63 if (o->router_id == 0)
64 o->router_id = (u_int32_t) router_id_zebra.s_addr;
69 /* redistribute function */
71 ospf6_zebra_redistribute (int type)
73 if (vrf_bitmap_check (zclient->redist[type], VRF_DEFAULT))
75 vrf_bitmap_set (zclient->redist[type], VRF_DEFAULT);
76 if (zclient->sock > 0)
77 zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, type,
82 ospf6_zebra_no_redistribute (int type)
84 if (! vrf_bitmap_check (zclient->redist[type], VRF_DEFAULT))
86 vrf_bitmap_unset (zclient->redist[type], VRF_DEFAULT);
87 if (zclient->sock > 0)
88 zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient, type,
92 /* Inteface addition message from zebra. */
94 ospf6_zebra_if_add (int command, struct zclient *zclient, zebra_size_t length,
97 struct interface *ifp;
99 ifp = zebra_interface_add_read (zclient->ibuf, vrf_id);
100 if (IS_OSPF6_DEBUG_ZEBRA (RECV))
101 zlog_debug ("Zebra Interface add: %s index %d mtu %d",
102 ifp->name, ifp->ifindex, ifp->mtu6);
103 ospf6_interface_if_add (ifp);
108 ospf6_zebra_if_del (int command, struct zclient *zclient, zebra_size_t length,
111 struct interface *ifp;
113 if (!(ifp = zebra_interface_state_read (zclient->ibuf, vrf_id)))
117 zlog_warn ("Zebra: got delete of %s, but interface is still up", ifp->name);
119 if (IS_OSPF6_DEBUG_ZEBRA (RECV))
120 zlog_debug ("Zebra Interface delete: %s index %d mtu %d",
121 ifp->name, ifp->ifindex, ifp->mtu6);
123 ifp->ifindex = IFINDEX_INTERNAL;
128 ospf6_zebra_if_state_update (int command, struct zclient *zclient,
129 zebra_size_t length, vrf_id_t vrf_id)
131 struct interface *ifp;
133 ifp = zebra_interface_state_read (zclient->ibuf, vrf_id);
137 if (IS_OSPF6_DEBUG_ZEBRA (RECV))
138 zlog_debug ("Zebra Interface state change: "
139 "%s index %d flags %llx metric %d mtu %d bandwidth %d",
140 ifp->name, ifp->ifindex, (unsigned long long)ifp->flags,
141 ifp->metric, ifp->mtu6, ifp->bandwidth);
143 ospf6_interface_state_update (ifp);
148 ospf6_zebra_if_address_update_add (int command, struct zclient *zclient,
149 zebra_size_t length, vrf_id_t vrf_id)
154 c = zebra_interface_address_read (ZEBRA_INTERFACE_ADDRESS_ADD, zclient->ibuf,
159 if (IS_OSPF6_DEBUG_ZEBRA (RECV))
160 zlog_debug ("Zebra Interface address add: %s %5s %s/%d",
161 c->ifp->name, prefix_family_str (c->address),
162 inet_ntop (c->address->family, &c->address->u.prefix,
163 buf, sizeof (buf)), c->address->prefixlen);
165 if (c->address->family == AF_INET6)
167 ospf6_interface_state_update (c->ifp);
168 ospf6_interface_connected_route_update (c->ifp);
174 ospf6_zebra_if_address_update_delete (int command, struct zclient *zclient,
175 zebra_size_t length, vrf_id_t vrf_id)
180 c = zebra_interface_address_read (ZEBRA_INTERFACE_ADDRESS_DELETE, zclient->ibuf,
185 if (IS_OSPF6_DEBUG_ZEBRA (RECV))
186 zlog_debug ("Zebra Interface address delete: %s %5s %s/%d",
187 c->ifp->name, prefix_family_str (c->address),
188 inet_ntop (c->address->family, &c->address->u.prefix,
189 buf, sizeof (buf)), c->address->prefixlen);
191 if (c->address->family == AF_INET6)
193 ospf6_interface_connected_route_update (c->ifp);
194 ospf6_interface_state_update (c->ifp);
201 ospf6_zebra_read_ipv6 (int command, struct zclient *zclient,
202 zebra_size_t length, vrf_id_t vrf_id)
205 struct zapi_ipv6 api;
206 unsigned long ifindex;
207 struct prefix_ipv6 p;
208 struct in6_addr *nexthop;
209 unsigned char plength = 0;
214 memset (&api, 0, sizeof (api));
216 /* Type, flags, message. */
217 api.type = stream_getc (s);
218 api.flags = stream_getc (s);
219 api.message = stream_getc (s);
222 memset (&p, 0, sizeof (struct prefix_ipv6));
224 plength = stream_getc (s);
225 p.prefixlen = MIN(IPV6_MAX_PREFIXLEN, plength);
226 stream_get (&p.prefix, s, PSIZE (p.prefixlen));
228 /* Nexthop, ifindex, distance, metric. */
229 if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP))
231 api.nexthop_num = stream_getc (s);
232 nexthop = (struct in6_addr *)
233 malloc (api.nexthop_num * sizeof (struct in6_addr));
234 stream_get (nexthop, s, api.nexthop_num * sizeof (struct in6_addr));
236 if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX))
238 api.ifindex_num = stream_getc (s);
239 ifindex = stream_getl (s);
241 if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
242 api.distance = stream_getc (s);
245 if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
246 api.metric = stream_getl (s);
250 if (CHECK_FLAG (api.message, ZAPI_MESSAGE_TAG))
251 api.tag = stream_getl (s);
255 if (IS_OSPF6_DEBUG_ZEBRA (RECV))
257 char prefixstr[128], nexthopstr[128];
258 prefix2str ((struct prefix *)&p, prefixstr, sizeof (prefixstr));
260 inet_ntop (AF_INET6, nexthop, nexthopstr, sizeof (nexthopstr));
262 snprintf (nexthopstr, sizeof (nexthopstr), "::");
264 zlog_debug ("Zebra Receive route %s: %s %s nexthop %s ifindex %ld tag %u",
265 (command == ZEBRA_IPV6_ROUTE_ADD ? "add" : "delete"),
266 zebra_route_string(api.type), prefixstr, nexthopstr, ifindex, api.tag);
269 if (command == ZEBRA_IPV6_ROUTE_ADD)
270 ospf6_asbr_redistribute_add (api.type, ifindex, (struct prefix *) &p,
271 api.nexthop_num, nexthop, api.tag);
273 ospf6_asbr_redistribute_remove (api.type, ifindex, (struct prefix *) &p);
275 if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP))
288 "Zebra information\n")
293 vty_out (vty, "Not connected to zebra%s", VNL);
297 vty_out (vty, "Zebra Infomation%s", VNL);
298 vty_out (vty, " enable: %d fail: %d%s",
299 zclient->enable, zclient->fail, VNL);
300 vty_out (vty, " redistribute default: %d%s",
301 vrf_bitmap_check (zclient->default_information, VRF_DEFAULT),
303 vty_out (vty, " redistribute:");
304 for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
306 if (vrf_bitmap_check (zclient->redist[i], VRF_DEFAULT))
307 vty_out (vty, " %s", zebra_route_string(i));
309 vty_out (vty, "%s", VNL);
316 "Enable a routing process\n"
317 "Make connection to zebra daemon\n")
319 vty->node = ZEBRA_NODE;
321 zclient_start (zclient);
325 DEFUN (no_router_zebra,
329 "Configure routing process\n"
330 "Disable connection to zebra daemon\n")
333 zclient_stop (zclient);
337 /* Zebra configuration write function. */
339 config_write_ospf6_zebra (struct vty *vty)
341 if (! zclient->enable)
343 vty_out (vty, "no router zebra%s", VNL);
344 vty_out (vty, "!%s", VNL);
346 else if (! vrf_bitmap_check (zclient->redist[ZEBRA_ROUTE_OSPF6], VRF_DEFAULT))
348 vty_out (vty, "router zebra%s", VNL);
349 vty_out (vty, " no redistribute ospf6%s", VNL);
350 vty_out (vty, "!%s", VNL);
355 /* Zebra node structure. */
356 static struct cmd_node zebra_node =
359 "%s(config-zebra)# ",
365 ospf6_zebra_route_update (int type, struct ospf6_route *request)
367 struct zapi_ipv6 api;
370 struct in6_addr **nexthops;
371 ifindex_t *ifindexes;
373 struct prefix_ipv6 *dest;
375 if (IS_OSPF6_DEBUG_ZEBRA (SEND))
377 prefix2str (&request->prefix, buf, sizeof (buf));
378 zlog_debug ("Send %s route: %s",
379 (type == REM ? "remove" : "add"), buf);
382 if (zclient->sock < 0)
384 if (IS_OSPF6_DEBUG_ZEBRA (SEND))
385 zlog_debug (" Not connected to Zebra");
389 if (request->path.origin.adv_router == ospf6->router_id &&
390 (request->path.type == OSPF6_PATH_TYPE_EXTERNAL1 ||
391 request->path.type == OSPF6_PATH_TYPE_EXTERNAL2))
393 if (IS_OSPF6_DEBUG_ZEBRA (SEND))
394 zlog_debug (" Ignore self-originated external route");
398 /* If removing is the best path and if there's another path,
399 treat this request as add the secondary path */
400 if (type == REM && ospf6_route_is_best (request) &&
401 request->next && ospf6_route_is_same (request, request->next))
403 if (IS_OSPF6_DEBUG_ZEBRA (SEND))
404 zlog_debug (" Best-path removal resulted Sencondary addition");
406 request = request->next;
409 /* Only the best path will be sent to zebra. */
410 if (! ospf6_route_is_best (request))
412 /* this is not preferred best route, ignore */
413 if (IS_OSPF6_DEBUG_ZEBRA (SEND))
414 zlog_debug (" Ignore non-best route");
419 for (i = 0; i < OSPF6_MULTI_PATH_LIMIT; i++)
420 if (ospf6_nexthop_is_set (&request->nexthop[i]))
425 if (IS_OSPF6_DEBUG_ZEBRA (SEND))
426 zlog_debug (" No nexthop, ignore");
430 /* allocate memory for nexthop_list */
431 nexthops = XCALLOC (MTYPE_OSPF6_OTHER,
432 nhcount * sizeof (struct in6_addr *));
433 if (nexthops == NULL)
435 zlog_warn ("Can't send route to zebra: malloc failed");
439 /* allocate memory for ifindex_list */
440 ifindexes = XCALLOC (MTYPE_OSPF6_OTHER,
441 nhcount * sizeof (unsigned int));
442 if (ifindexes == NULL)
444 zlog_warn ("Can't send route to zebra: malloc failed");
445 XFREE (MTYPE_OSPF6_OTHER, nexthops);
449 for (i = 0; i < nhcount; i++)
451 if (IS_OSPF6_DEBUG_ZEBRA (SEND))
454 inet_ntop (AF_INET6, &request->nexthop[i].address,
456 ifname = ifindex2ifname (request->nexthop[i].ifindex);
457 zlog_debug (" nexthop: %s%%%.*s(%d)", buf, IFNAMSIZ, ifname,
458 request->nexthop[i].ifindex);
460 nexthops[i] = &request->nexthop[i].address;
461 ifindexes[i] = request->nexthop[i].ifindex;
464 api.vrf_id = VRF_DEFAULT;
465 api.type = ZEBRA_ROUTE_OSPF6;
468 api.safi = SAFI_UNICAST;
469 SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP);
470 api.nexthop_num = nhcount;
471 api.nexthop = nexthops;
472 SET_FLAG (api.message, ZAPI_MESSAGE_IFINDEX);
473 api.ifindex_num = nhcount;
474 api.ifindex = ifindexes;
475 SET_FLAG (api.message, ZAPI_MESSAGE_METRIC);
476 api.metric = (request->path.metric_type == 2 ?
477 request->path.cost_e2 : request->path.cost);
478 if (request->path.tag)
480 SET_FLAG (api.message, ZAPI_MESSAGE_TAG);
481 api.tag = request->path.tag;
484 dest = (struct prefix_ipv6 *) &request->prefix;
486 ret = zapi_ipv6_route (ZEBRA_IPV6_ROUTE_DELETE, zclient, dest, &api);
488 ret = zapi_ipv6_route (ZEBRA_IPV6_ROUTE_ADD, zclient, dest, &api);
491 zlog_err ("zapi_ipv6_route() %s failed: %s",
492 (type == REM ? "delete" : "add"), safe_strerror (errno));
494 XFREE (MTYPE_OSPF6_OTHER, nexthops);
495 XFREE (MTYPE_OSPF6_OTHER, ifindexes);
501 ospf6_zebra_route_update_add (struct ospf6_route *request)
503 if (! vrf_bitmap_check (zclient->redist[ZEBRA_ROUTE_OSPF6], VRF_DEFAULT))
505 ospf6->route_table->hook_add = NULL;
506 ospf6->route_table->hook_remove = NULL;
509 ospf6_zebra_route_update (ADD, request);
513 ospf6_zebra_route_update_remove (struct ospf6_route *request)
515 if (! vrf_bitmap_check (zclient->redist[ZEBRA_ROUTE_OSPF6], VRF_DEFAULT))
517 ospf6->route_table->hook_add = NULL;
518 ospf6->route_table->hook_remove = NULL;
521 ospf6_zebra_route_update (REM, request);
524 DEFUN (redistribute_ospf6,
525 redistribute_ospf6_cmd,
526 "redistribute ospf6",
527 "Redistribute control\n"
530 struct ospf6_route *route;
532 if (vrf_bitmap_check (zclient->redist[ZEBRA_ROUTE_OSPF6], VRF_DEFAULT))
535 vrf_bitmap_set (zclient->redist[ZEBRA_ROUTE_OSPF6], VRF_DEFAULT);
540 /* send ospf6 route to zebra route table */
541 for (route = ospf6_route_head (ospf6->route_table); route;
542 route = ospf6_route_next (route))
543 ospf6_zebra_route_update_add (route);
545 ospf6->route_table->hook_add = ospf6_zebra_route_update_add;
546 ospf6->route_table->hook_remove = ospf6_zebra_route_update_remove;
551 DEFUN (no_redistribute_ospf6,
552 no_redistribute_ospf6_cmd,
553 "no redistribute ospf6",
555 "Redistribute control\n"
558 struct ospf6_route *route;
560 if (! vrf_bitmap_check (zclient->redist[ZEBRA_ROUTE_OSPF6], VRF_DEFAULT))
563 vrf_bitmap_unset (zclient->redist[ZEBRA_ROUTE_OSPF6], VRF_DEFAULT);
568 ospf6->route_table->hook_add = NULL;
569 ospf6->route_table->hook_remove = NULL;
571 /* withdraw ospf6 route from zebra route table */
572 for (route = ospf6_route_head (ospf6->route_table); route;
573 route = ospf6_route_next (route))
574 ospf6_zebra_route_update_remove (route);
580 ospf6_zebra_connected (struct zclient *zclient)
582 zclient_send_requests (zclient, VRF_DEFAULT);
585 static struct ospf6_distance *
586 ospf6_distance_new (void)
588 return XCALLOC (MTYPE_OSPF6_DISTANCE, sizeof (struct ospf6_distance));
592 ospf6_distance_free (struct ospf6_distance *odistance)
594 XFREE (MTYPE_OSPF6_DISTANCE, odistance);
598 ospf6_distance_set (struct vty *vty, struct ospf6 *o,
599 const char *distance_str,
601 const char *access_list_str)
604 struct prefix_ipv6 p;
606 struct route_node *rn;
607 struct ospf6_distance *odistance;
609 ret = str2prefix_ipv6 (ip_str, &p);
612 vty_out (vty, "Malformed prefix%s", VTY_NEWLINE);
616 distance = atoi (distance_str);
618 /* Get OSPF6 distance node. */
619 rn = route_node_get (o->distance_table, (struct prefix *) &p);
622 odistance = rn->info;
623 route_unlock_node (rn);
627 odistance = ospf6_distance_new ();
628 rn->info = odistance;
631 /* Set distance value. */
632 odistance->distance = distance;
634 /*Reset access-list configuration. */
635 if (odistance->access_list)
637 free (odistance->access_list);
638 odistance->access_list = NULL;
641 odistance->access_list = strdup (access_list_str);
647 ospf6_distance_unset (struct vty *vty, struct ospf6 *o,
649 const char *access_list_str)
652 struct prefix_ipv6 p;
653 struct route_node *rn;
654 struct ospf6_distance *odistance;
656 ret = str2prefix_ipv6 (ip_str, &p);
659 vty_out (vty, "Malformed prefix%s", VTY_NEWLINE);
663 rn = route_node_lookup (o->distance_table, (struct prefix *) &p);
666 vty_out (vty, "Cant't find specified prefix%s", VTY_NEWLINE);
670 odistance = rn->info;
672 if (odistance->access_list)
673 free (odistance->access_list);
674 ospf6_distance_free (odistance);
677 route_unlock_node (rn);
678 route_unlock_node (rn);
684 ospf6_distance_reset (struct ospf6 *o)
686 struct route_node *rn;
687 struct ospf6_distance *odistance;
689 for (rn = route_top (o->distance_table); rn; rn = route_next (rn))
690 if ((odistance = rn->info) != NULL)
692 if (odistance->access_list)
693 free (odistance->access_list);
694 ospf6_distance_free (odistance);
696 route_unlock_node (rn);
701 ospf6_distance_apply (struct ospf6_route *or, struct ospf6 *o)
707 if (o->distance_intra)
708 if (or->path.type == OSPF6_PATH_TYPE_INTRA)
709 return o->distance_intra;
711 if (o->distance_inter)
712 if (or->path.type == OSPF6_PATH_TYPE_INTER)
713 return o->distance_inter;
715 if (o->distance_external)
716 if(or->path.type == OSPF6_PATH_TYPE_EXTERNAL1
717 || or->path.type == OSPF6_PATH_TYPE_EXTERNAL2)
718 return o->distance_external;
721 return o->distance_all;
727 ospf6_zebra_init (struct thread_master *master)
729 /* Allocate zebra structure. */
730 zclient = zclient_new (master);
731 zclient_init (zclient, ZEBRA_ROUTE_OSPF6);
732 zclient->zebra_connected = ospf6_zebra_connected;
733 zclient->router_id_update = ospf6_router_id_update_zebra;
734 zclient->interface_add = ospf6_zebra_if_add;
735 zclient->interface_delete = ospf6_zebra_if_del;
736 zclient->interface_up = ospf6_zebra_if_state_update;
737 zclient->interface_down = ospf6_zebra_if_state_update;
738 zclient->interface_address_add = ospf6_zebra_if_address_update_add;
739 zclient->interface_address_delete = ospf6_zebra_if_address_update_delete;
740 zclient->ipv4_route_add = NULL;
741 zclient->ipv4_route_delete = NULL;
742 zclient->ipv6_route_add = ospf6_zebra_read_ipv6;
743 zclient->ipv6_route_delete = ospf6_zebra_read_ipv6;
745 /* redistribute connected route by default */
746 /* ospf6_zebra_redistribute (ZEBRA_ROUTE_CONNECT); */
748 /* Install zebra node. */
749 install_node (&zebra_node, config_write_ospf6_zebra);
751 /* Install command element for zebra node. */
752 install_element (VIEW_NODE, &show_zebra_cmd);
753 install_element (CONFIG_NODE, &router_zebra_cmd);
754 install_element (CONFIG_NODE, &no_router_zebra_cmd);
756 install_default (ZEBRA_NODE);
757 install_element (ZEBRA_NODE, &redistribute_ospf6_cmd);
758 install_element (ZEBRA_NODE, &no_redistribute_ospf6_cmd);
765 DEFUN (debug_ospf6_zebra_sendrecv,
766 debug_ospf6_zebra_sendrecv_cmd,
767 "debug ospf6 zebra (send|recv)",
770 "Debug connection between zebra\n"
771 "Debug Sending zebra\n"
772 "Debug Receiving zebra\n"
775 unsigned char level = 0;
779 if (! strncmp (argv[0], "s", 1))
780 level = OSPF6_DEBUG_ZEBRA_SEND;
781 else if (! strncmp (argv[0], "r", 1))
782 level = OSPF6_DEBUG_ZEBRA_RECV;
785 level = OSPF6_DEBUG_ZEBRA_SEND | OSPF6_DEBUG_ZEBRA_RECV;
787 OSPF6_DEBUG_ZEBRA_ON (level);
791 ALIAS (debug_ospf6_zebra_sendrecv,
792 debug_ospf6_zebra_cmd,
796 "Debug connection between zebra\n"
800 DEFUN (no_debug_ospf6_zebra_sendrecv,
801 no_debug_ospf6_zebra_sendrecv_cmd,
802 "no debug ospf6 zebra (send|recv)",
806 "Debug connection between zebra\n"
807 "Debug Sending zebra\n"
808 "Debug Receiving zebra\n"
811 unsigned char level = 0;
815 if (! strncmp (argv[0], "s", 1))
816 level = OSPF6_DEBUG_ZEBRA_SEND;
817 else if (! strncmp (argv[0], "r", 1))
818 level = OSPF6_DEBUG_ZEBRA_RECV;
821 level = OSPF6_DEBUG_ZEBRA_SEND | OSPF6_DEBUG_ZEBRA_RECV;
823 OSPF6_DEBUG_ZEBRA_OFF (level);
827 ALIAS (no_debug_ospf6_zebra_sendrecv,
828 no_debug_ospf6_zebra_cmd,
829 "no debug ospf6 zebra",
833 "Debug connection between zebra\n"
837 config_write_ospf6_debug_zebra (struct vty *vty)
839 if (IS_OSPF6_DEBUG_ZEBRA (SEND) && IS_OSPF6_DEBUG_ZEBRA (RECV))
840 vty_out (vty, "debug ospf6 zebra%s", VNL);
843 if (IS_OSPF6_DEBUG_ZEBRA (SEND))
844 vty_out (vty, "debug ospf6 zebra send%s", VNL);
845 if (IS_OSPF6_DEBUG_ZEBRA (RECV))
846 vty_out (vty, "debug ospf6 zebra recv%s", VNL);
852 install_element_ospf6_debug_zebra (void)
854 install_element (ENABLE_NODE, &debug_ospf6_zebra_cmd);
855 install_element (ENABLE_NODE, &no_debug_ospf6_zebra_cmd);
856 install_element (ENABLE_NODE, &debug_ospf6_zebra_sendrecv_cmd);
857 install_element (ENABLE_NODE, &no_debug_ospf6_zebra_sendrecv_cmd);
858 install_element (CONFIG_NODE, &debug_ospf6_zebra_cmd);
859 install_element (CONFIG_NODE, &no_debug_ospf6_zebra_cmd);
860 install_element (CONFIG_NODE, &debug_ospf6_zebra_sendrecv_cmd);
861 install_element (CONFIG_NODE, &no_debug_ospf6_zebra_sendrecv_cmd);