I have no idea. It is true that BIRD does not check checksums of
LSAs later when they are stored, but it checks that when it receives
them. If you did restart of a BIRD (or at least OSPF protocol) then no
bad LSA could survive that. It might be useful if you could get a
tcpdump copy of the OSPF communication [*] on the problematic link (when
there is a problem). and output of 'show ospf lsadb'.
[*] tcpdump -i ethX -s 0 -w dumpfile ip proto 89
I am not quite sure if it is LSA checksum. I don't have tcpdump stored
anywhere, because I was watching it "live", but it looked like RouterOS
had a problem with Hello packet itself.
The moment I've seen Hello packet broadcasted to the link, the wrong
checksum entry poped in RouterOS logs.
--
Adrian
