On 16 May 2016 at 19:03, Josh Nielsen <jniel...@hudsonalpha.org> wrote:

> Thank you for the response Mark. I'm still a little confused at what this
> might mean though. Clearly the originating address is my slave DNS server
> (every single one of the messages say "error: client 10.20.0.101").
>
> Are you saying that some process other than named on the same server
> (10.20.0.101) is responsible for these messages (and is there a 'for
> instance' of what could do such a thing?), or that somehow other hosts are
> relaying their update requests (again: from what possible processes?)
> through my slave dns server? What can I look for to figure this out on my
> network?
>

Your DHCP daemon would be one thing that could be generating those
messages.  Often it's configured to update the DNS with the addresses it's
handing out (either forward, reverse, or both).
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