Am just posting this here as I found some different symptoms that were fixed by the workaround for this bug in case anyone else is getting them. I suspect it''s the same bug as I think the debugs were complaining about Opaque LSAs
I've seen this bug in an ASAv running 9.5(2)203 but the symptoms were slightly different.
The device was fully adjacent with 6 other devices - a combination of ASR1Ks and VMware NSX edge devices, but the adjacency kept dropping and re-establishing, causing SPF to run every minute or so.
Debugs on the ASAv showed the following;
OSPF: Rcv pkt from 100.2.3.4, GB_NET : Mismatch Authentication Key - Message Digest Key 1
And a large number of messages saying "Bad pkt rcvd: " from the DR
The MD5 key is correct else the adjacency would never establish so the error message must be a red herring. The workaround in the bug description fixes this problem
