BIND9 and AS112

[Stephane Bortzmeyer]

On Fri, Mar 09, 2018 at 12:32:41PM +0300,
 Diarmuid O Briain <diarmuid at obriain.com> wrote 
 a message of 122 lines which said:

> Mar 09 08:11:43 as112 named[3787]: internal_send: 2620:4f:8000::42#53:
> Invalid argument
> Mar 09 08:11:43 as112 named[3787]: internal_send: 192.175.48.42#53: Invalid
> argument

I suspect that your machine is not configured for these IP
addresses. See with ifconfig or ip addr show.