difference in responses between UDP and TCP

[Arun Natarajan]

Hello Anand,

 Thanks for the response.

>
> Perhaps the zone got updated between your queries.
>
> Have you (as one should in a proper experiment) repeated these queries
> to demonstrate that this is happening consistently?
>

Yes, it is a consistent behaviour. It happens with some of our secondaries.

for example:
dig +tcp @212.26.18.3 pub.sa
serial: 2017061804
dig +notcp @212.26.18.3 pub.sa
serial: 2017061805


> If it is happening consistently, then it's possible that you have *two*
> DNS servers listening on the server, one on the UDP socket, and another
> on the TCP socket, and they're loaded with different zones.
>

To my understanding, they are running bind with one configuration. Will
double check anyway.

thanks,
arun
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.isc.org/pipermail/bind-users/attachments/20170618/8351379b/attachment.html>