difference in responses between UDP and TCP

Arun Natarajan arun at arunns.com
Sun Jun 18 12:04:32 UTC 2017

> 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.
You are right, seems there are two DNS process listening TCP and UDP.  :)

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