Hello all Could someone explain me, what is the reason a neighbor state remains in exchange or loading? On the neighbor himself, the state is in full. If I dump the traffic, I see these LS packets again and again: 08:11:42.636071 IP 10.254.1.10 > 10.254.10.1: OSPFv2, LS-Request, length: 36 08:11:42.637017 IP 10.254.10.1 > 10.254.1.10: OSPFv2, LS-Update, length: 244 08:11:42.640274 IP 10.254.1.10 > 10.254.10.1: OSPFv2, LS-Ack, length: 44 Where can I search for reason? Is the request or the update packet wrong? Or could it be a bird internal problem? I am using bird 1.1.6. Normally everything is working fine. The problem happens sometimes after bird restart. If necessary I could provide more information about the whole configuration. Thanks für any explanation. Best regards Elmar