servfail only for a zone

[Lucio Crusca]

Il 13/07/2015 19:21, Reindl Harald ha scritto:
>
> check if the zone failed to update from the master and has expired, 
> been there due a cisco router with "DNS ALG" enabled leading only a 
> few large zones fail to transfer
>

Yes the zone failed to update, I know because if I raise the seqno @ns1, 
it tries to update and it keeps failing. I don't understand why it 
fails. I doubt a Cisco router is to blame here because ns1 and ns2 are 
two guests of the same host, no routers between them.