Controlling which interface named uses

[Anand Buddhdev]

On 09/06/2023 17:26, Alessandro Vesely wrote:

Hi Alessandro,

> Hi,
> 
> I have two WANs.  As a leftover from the times when I had no IPv6 
> address, I was running named with -4 option.  I just removed it a couple 
> of minutes ago. However, I still have IPv4 precedence in gai.conf:
> precedence  ::1/128               50     0
> precedence  ::/0                  40     1
> precedence  2002::/16             30     2
> precedence  ::/96                 20     3
> precedence  ::ffff:0:0/96        100     4

If you want your applications to prefer IPv6, then just remove this 
file. The default is to prefer IPv6.

[snip]

> Having two WANs, it would be reasonable, in case one doesn't work, to 
> try the other one.  However, it's always useless to try the LAN.  Is 
> there any way to configure which interface is used for outgoing queries?

You can configure "query-source" and "query-source-v6" in named.conf, to 
tell BIND which interface to use for outgoing queries.

Regards,
Anand