On Sun, Aug 26, 2018 at 08:23:24PM -0500, Jon Schewe wrote:
> I run a caching DNS server locally and it also serves up the domain for my
> house. Since I upgrade from Ubuntu 16.04 to Ubuntu 18.04 I started seeing a
> number of errors from named like this:
> 
> 26-Aug-2018 08:05:21.536 general: error:
> ../../../../lib/isc/unix/socket.c:2135: unexpected error:
> 26-Aug-2018 08:05:21.537 general: error: internal_send:
> 192.168.42.11#44893: Invalid argument
> 
> I have done some Google searching and haven't found a way to track down
> what these errors are about. The hosts giving the errors vary. I've turned
> on some more logging and gotten a little more information, but nothing that
> I know how to act on yet.

Hi Jon

You might get more information using strace. You can attach to a
running process using -p <PID>.

	Andrew