Hello, I'm running Bird 2.0.11 on FreeBSD 13.2, I also have a number of bird 2.0.x in local network. For a number of reasons I need the interface the OSPF is bound to to be in non-default FIB. As soon as I put it there, I'm starting to get the periodic errors like ===Cut=== ospfv4: Socket error on igb0: Network is unreachable ===Cut=== (v4 here stands for IPv4) and the bird is also unable to establish the neighborship with 2 of 7 it's neighbors: ===Cut=== # birdc BIRD 2.0.11 ready. bird> show ospf neighbors ospfv4: Router ID Pri State DTime Interface Router IP 192.168.57.35 1 Full/BDR 36.075 igb0 192.168.57.35 192.168.57.37 1 Full/DR 31.771 igb0 192.168.57.147 192.168.57.23 1 2-Way/Other 31.771 igb0 192.168.57.23 192.168.57.13 1 2-Way/Other 31.894 igb0 192.168.57.13 192.168.100.254 1 Full/PtP 37.138 gre1 172.16.0.7 178.161.174.72 128 Full/PtP 39.563 gre4 172.16.0.24 192.9.200.5 1 Full/PtP 33.227 ipsec0 172.16.0.13 192.168.55.254 1 Full/PtP 36.256 ipsec1 172.16.0.80 178.161.174.72 128 Full/PtP 34.665 ipsec2 172.16.0.22 89.108.123.58 1 Full/PtP 33.138 ipsec3 172.16.0.28 192.168.52.1 1 Full/PtP 32.505 ipsec4 172.16.0.30 ===Cut=== For instance, 192.168.57.35 and 192.168.57.37 are stuck in ExtStart. Why ? My config looks like this: ===Cut=== protocol ospf ospfv4 { ipv4 { table master4; export filter exportospfv4; import filter importospfv4; }; #debug all; area 0.0.0.0 { interface "igb0" { cost 111; }; interface "tun0" { cost 111; }; }; area 0.0.0.1 { interface "gif1" { cost 4111; }; interface "ipsec0" { cost 7111; }; }; area 0.0.0.2 { interface "gre1" { cost 1211; }; interface "gre2" { cost 1111; }; interface "gre6"; }; area 0.0.0.3 { interface "gif5"; interface "ipsec1"; }; area 0.0.0.4 { interface "ipsec2"; interface "gre4"; interface "gre5"; }; area 0.0.0.5 { interface "ipsec3"; }; area 0.0.0.6 { interface "ipsec4"; }; } ===Cut=== I've also tried to put ospfv4 protocol in the same FIB the interface is in (adding the "table fib1" statement), but got the same error about network unreachability. Restarting bird does not clear this state also. Running ospf with full debug gives this: ===Cut=== Aug 21 11:23:12 ronin bird[59670]: ospfv4: DBDES packet received from nbr 192.168.57.35 on igb0 Aug 21 11:23:12 ronin bird[59670]: ospfv4: length 32 Aug 21 11:23:12 ronin bird[59670]: ospfv4: router 192.168.57.35 Aug 21 11:23:12 ronin bird[59670]: ospfv4: mtu 1500 Aug 21 11:23:12 ronin bird[59670]: ospfv4: imms I M MS Aug 21 11:23:12 ronin bird[59670]: ospfv4: ddseq 1977563332 Aug 21 11:23:12 ronin bird[59670]: ospfv4: HELLO packet received from nbr 192.168.100.254 on gre1 Aug 21 11:23:15 ronin bird[59670]: ospfv4: HELLO packet received from nbr 178.161.174.72 on gre4 Aug 21 11:23:16 ronin bird[59670]: ospfv4: DBDES packet sent to nbr 192.168.57.35 on igb0 Aug 21 11:23:16 ronin bird[59670]: ospfv4: length 32 Aug 21 11:23:16 ronin bird[59670]: ospfv4: router 192.168.57.254 Aug 21 11:23:16 ronin bird[59670]: ospfv4: mtu 1500 Aug 21 11:23:16 ronin bird[59670]: ospfv4: imms I M MS Aug 21 11:23:16 ronin bird[59670]: ospfv4: ddseq 3625460956 Aug 21 11:23:16 ronin bird[59670]: ospfv4: Socket error on igb0: Network is unreachable ===Cut=== Right now I have no idea how to fix this. Thanks. Eugene.