Router1: ! frr version 3.1-dev-frr1 frr defaults traditional no log monitor username cumulus nopassword ! service integrated-vtysh-config ! log syslog informational ! router bgp 65301 neighbor 10.247.0.1 remote-as 65500 ! address-family ipv4 unicast network 10.194.0.0/21 exit-address-family ! address-family ipv6 unicast network 2a01:d0:c353:180::/58 neighbor 10.247.0.1 activate exit-address-family vnc defaults response-lifetime 3600 exit-vnc ! router ospf ospf router-id 10.0.250.1 network 10.0.250.0/24 area 0 ! router ospf6 interface eth1 area 0.0.0.0 ! ip route 10.194.0.0/21 Null0 ipv6 route 2a01:d0:c353:180::/58 Null0 ! mpls label global-block 16 8092 ! line vty ! end router 2: Current configuration: ! frr version 3.1-dev frr defaults traditional no log monitor username cumulus nopassword ! service integrated-vtysh-config ! log file /var/log/frr/frr.log ! log timestamp precision 6 ! log syslog informational ! router ospf ospf router-id 10.0.250.10 redistribute static network 10.0.250.0/24 area 0 ! ip route 10.194.2.0/24 Null0 ! line vty ! end Router 1: border# sh ip ospf route ============ OSPF network routing table ============ N 10.0.250.0/24 [10] area: 0.0.0.0 directly attached to eth1 ============ OSPF router routing table ============= ============ OSPF external routing table =========== border# sh ip route Codes: K - kernel route, C - connected, S - static, R - RIP, O - OSPF, I - IS-IS, B - BGP, P - PIM, E - EIGRP, N - NHRP, T - Table, v - VNC, V - VNC-Direct,

- selected route, * - FIB route

K>* 0.0.0.0/0 via 10.247.0.1, eth0 O 10.0.250.0/24 [110/10] is directly connected, eth1, 02:14:23 C>* 10.0.250.0/24 is directly connected, eth1 S>* 10.194.0.0/21 [1/0] is directly connected, Null0, bh C>* 10.194.0.0/24 is directly connected, null0 B 10.247.0.0/24 [20/0] via 10.247.0.1 inactive, 02:14:21 C>* 10.247.0.0/24 is directly connected, eth0 B>* 10.247.1.0/24 [20/0] via 10.247.0.1, eth0, 02:14:21 B>* 10.247.2.0/24 [20/0] via 10.247.0.1, eth0, 02:14:21 B>* 10.247.203.0/24 [20/0] via 10.247.0.1, eth0, 02:14:21 B>* 10.247.204.0/24 [20/0] via 10.247.0.1, eth0, 02:14:2 Router2: s1# sh ip route Codes: K - kernel route, C - connected, S - static, R - RIP, O - OSPF, I - IS-IS, B - BGP, P - PIM, E - EIGRP, N - NHRP, T - Table, v - VNC, V - VNC-Direct,

- selected route, * - FIB route

K>* 0.0.0.0/0 via 10.0.250.1, eth0 O 10.0.250.0/24 [110/10] is directly connected, eth0, 00:32:18 C>* 10.0.250.0/24 is directly connected, eth0 C>* 10.194.1.0/24 is directly connected, eth1 S>* 10.194.2.0/24 [1/0] is directly connected, Null0, bh s1# Ospf not working! It seems to me that this is a bug, since with quagga and the old version of frr everything worked.