Hi, brief: 'sh ip ospf database' do not show networks, configured on OVS bridges, while neighbors see these networks. Details: Here is 8.5.2-0~ubuntu22.04.1 from FRR repo and Openvswitch from Ubuntu repo (2.17.7-0ubuntu0.22.04.1 ). Host configured with OVS bridges (br-ex, bt-int), 802.1q subinterfaces (orange) and plain links (blue) and marked in bold below are subject of the question: 3: blue: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000     inet 100.64.98.3/24 brd 100.64.98.255 scope global blue        valid_lft forever preferred_lft forever 8: orange@ens2f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1496 qdisc noqueue state UP group default qlen 1000     inet 100.64.99.3/24 brd 100.64.99.255 scope global orange        valid_lft forever preferred_lft forever *10: br-ex: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN group default qlen 1000** **    inet 192.145.111.65/27 brd 192.145.111.95 scope global br-ex** **       valid_lft forever preferred_lft forever** ****11: br-int: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1496 qdisc noqueue state UNKNOWN group default qlen 1000** **    inet 100.64.4.1/23 brd 100.64.5.255 scope global br-int** **       valid_lft forever preferred_lft forever* OSPF configuration on FRR is the following: interface blue  ip ospf dead-interval 4  ip ospf hello-interval 1  no ip ospf passive exit ! interface orange  ip ospf dead-interval 4  ip ospf hello-interval 1  no ip ospf passive exit ! router ospf  ospf router-id 100.64.4.1  passive-interface default  network 100.64.4.0/23 area 0  network 100.64.98.0/24 area 0  network 100.64.99.0/24 area 0  network 192.145.111.0/24 area 0  default-information originate exit but while br-ex and br-int networks are missing in output of 'sh ip ospf database' # sh ip ospf database        OSPF Router with ID (100.64.4.1)                 Router Link States (Area 0.0.0.0) Link ID         ADV Router      Age  Seq#       CkSum  Link count 100.64.0.1     100.64.0.1       136 0x800000f8 0xfe2e 5 100.64.2.1     100.64.2.1       135 0x800000ba 0xcd74 3 100.64.4.1     100.64.4.1        96 0x80000374 0xceaf 4                 Net Link States (Area 0.0.0.0) Link ID         ADV Router      Age  Seq#       CkSum 100.64.98.2    100.64.2.1       136 0x80000006 0xf9af 100.64.99.2    100.64.2.1       136 0x80000006 0xeeb9                 AS External Link States Link ID         ADV Router      Age  Seq#       CkSum  Route 0.0.0.0        100.64.0.1      1183 0x800000b9 0x4624 E2 0.0.0.0/0 [0x0] 0.0.0.0        100.64.4.1       130 0x800000bd 0x2240 E2 0.0.0.0/0 [0x0] neighboring routers see them: O>* 100.64.4.0/23 [110/20] via 100.64.98.3, blue, weight 1, 00:35:57   *                        via 100.64.99.3, orange, weight 1, 00:35:57 O>* 192.145.111.64/27 [110/20] via 100.64.98.3, blue, weight 1, 00:16:17   *                            via 100.64.99.3, orange, weight 1, 00:16:17 I guess the issue can be with UNKNOWN state of the interface (though LOWER_UP says that everything is ok with underlay). So the question is - whether this can lead to any issues (I do not see them at the moment except troubleshooting in case) or it worth attention and need to be fixed in some ways? If yes - in which ways it should be fixed? Thank you. -- Volodymyr Litovka "Vision without Execution is Hallucination." -- Thomas Edison