diff options
Diffstat (limited to 'ospf6d/ospf6_message.c')
| -rw-r--r-- | ospf6d/ospf6_message.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/ospf6d/ospf6_message.c b/ospf6d/ospf6_message.c index 3dcc74589a..53f3c3468a 100644 --- a/ospf6d/ospf6_message.c +++ b/ospf6d/ospf6_message.c @@ -553,6 +553,21 @@ static void ospf6_hello_recv(struct in6_addr *src, struct in6_addr *dst, return; } + /* + * RFC 3623 - Section 2: + * "If the restarting router determines that it was the Designated + * Router on a given segment prior to the restart, it elects + * itself as the Designated Router again. The restarting router + * knows that it was the Designated Router if, while the + * associated interface is in Waiting state, a Hello packet is + * received from a neighbor listing the router as the Designated + * Router". + */ + if (oi->area->ospf6->gr_info.restart_in_progress + && oi->state == OSPF6_INTERFACE_WAITING + && hello->drouter == oi->area->ospf6->router_id) + oi->drouter = hello->drouter; + /* Schedule interface events */ if (backupseen) thread_add_event(master, backup_seen, oi, 0, NULL); |