Hi Bird users, I am seeing different behavior with respect to OSPF type 5 LSA routes. The setup contains two routers R1,R2 as shown below. OSPF is running on eth2 of both routers R1,R2. R1 router eth1 interface is in OSPF passive mode. We are configuring a static route on R1 and it is getting advertised into the OSPF domain. The static route configured on R1 is: 33.0.0.0/8 gateway 172.19.13.1 (eth1:172.19.13.128/24) R1 (eth2:55.55.55.100/24 ) <--------------------------> (eth2: 55.55.55.200/24) R2 CASE 1: When Static routes first get added on R1, after that eth1 interface added to OSPF on R1. We can see the Static route always present on R2 as a type 5 route and there is no impact of removing eth1 from OSPF on the R1 router. CASE 2: When eth1 added as OSPF interface on R1 first, then static route added later. Deletion eth1 from OSPF on R1 , deletes static route also from R2. Incase of Case 2, the behavior we observe is a bug ? Case 1, 2 bird logs are attached. Regards, Bala.