Hi, we're running redundant pairs of routers using keepalived for VRRP and BIRD for OSPF. (bird-1.3.3 through bird-1.3.6 actually) Static routes are configured in BIRD so when keepalived transitions to master state it adds ip addresses to a bunch of vlan interfaces and the routes' gateways become directly reachable and are being announced. Now when I failover from one primary router to a backup router by stopping keepalived the interfaces' addresses are being deleted on the former master and added to the backup router. Immediately after such a transition all BIRD routers fill their log files periodically with this kind of messages: Jan 25 14:47:06 cr4b bird: OSPF: LSA disappeared (Type: 0005, Id: 192.0.2.0, Rt: 10.10.10.170) Jan 25 14:47:06 cr4b bird: OSPF: LSA disappeared (Type: 0005, Id: 192.0.2.128, Rt: 10.10.10.170) Jan 25 14:47:06 cr4b bird: OSPF: LSA disappeared (Type: 0005, Id: 198.51.100.160, Rt: 10.10.10.170) Jan 25 14:47:06 cr4b bird: OSPF: LSA disappeared (Type: 0005, Id: 192.0.2.0, Rt: 10.10.10.170) Jan 25 14:47:06 cr4b bird: OSPF: LSA disappeared (Type: 0005, Id: 192.0.2.128, Rt: 10.10.10.170) Jan 25 14:47:06 cr4b bird: OSPF: LSA disappeared (Type: 0005, Id: 198.51.100.160, Rt: 10.10.10.170) Jan 25 14:47:11 cr4b bird: OSPF: LSA disappeared (Type: 0005, Id: 192.0.2.0, Rt: 10.10.10.170) Jan 25 14:47:11 cr4b bird: OSPF: LSA disappeared (Type: 0005, Id: 192.0.2.128, Rt: 10.10.10.170) Jan 25 14:47:11 cr4b bird: OSPF: LSA disappeared (Type: 0005, Id: 198.51.100.160, Rt: 10.10.10.170) Jan 25 14:47:11 cr4b bird: OSPF: LSA disappeared (Type: 0005, Id: 192.0.2.0, Rt: 10.10.10.170) Jan 25 14:47:11 cr4b bird: OSPF: LSA disappeared (Type: 0005, Id: 192.0.2.128, Rt: 10.10.10.170) Jan 25 14:47:11 cr4b bird: OSPF: LSA disappeared (Type: 0005, Id: 198.51.100.160, Rt: 10.10.10.170) proto/ospf/lsupd.c says this should never happen: /* Probably flushed LSA, this should not happen */ log(L_WARN "OSPF: LSA disappeared (Type: %04x, Id: %R, Rt: %R)", lsr->lsh.type, lsr->lsh.id, lsr->lsh.rt); Is this some bug in BIRD or caused by the way we use it? Regards Bjoern -- Bjoern Engels OpenIT GmbH engels@openit.de In der Steele 33a-41 PGP keyID 1024D/895F13C3 D-40599 Duesseldorf ________________________________________________________________________ HRB 38815 Amtsgericht Duesseldorf USt-Id DE 812951861 Geschaeftsfuehrer: Oliver Haakert, Maurice Kemmann