[Samba] Samba 4 custom ports for DNS in 2020?

[Sonic]

On Wed, Dec 16, 2020 at 4:11 PM Alex Orlov via samba
<samba at lists.samba.org> wrote:
> I don’t see any problems with the ports that Microsoft uses if I add to samba configuration
> "dns forwarder = x.x.x.x:non_53_port"  instead of "dns forwarder = x.x.x.x", do you?

If you need that extra flexibility then use the Bind9 DLZ DNS backend
instead of the internal DNS.