samba - Jul 2019 - DNS not working, samba not listening on port 53

I joined a DC, but the DC does not listen on port 53. When I do a  netstat
-a -n -p |grep 53, I can tell that systemd-resolv listens on 127.0.0.53:53,
but nobody is listening on 192.168.177.18:53 or 127.0.0.1:53 as I?d expect
(and is the case on my previous DCs except of course the IP address
differs).

Don?t know if that matters: I forgot to specify an upstream resolver during
join, but added that later on in smb.conf. 

The new DC is on ubuntu 18.04.2 and running Samba 4.10.5 of Louis.

Everything else I tried works: sysvol is available, RSAT tools work.

What can be the root cause?

Thanks, Joachim

On 13/07/2019 20:42, Joachim Lindenberg via samba wrote:
> I joined a DC, but the DC does not listen on port 53. When I do a  netstat
> -a -n -p |grep 53, I can tell that systemd-resolv listens on 127.0.0.53:53,
> but nobody is listening on 192.168.177.18:53 or 127.0.0.1:53 as I?d expect
> (and is the case on my previous DCs except of course the IP address
> differs).
>
> Don?t know if that matters: I forgot to specify an upstream resolver during
> join, but added that later on in smb.conf.
>
> The new DC is on ubuntu 18.04.2 and running Samba 4.10.5 of Louis.
>
> Everything else I tried works: sysvol is available, RSAT tools work.
>
> What can be the root cause?
>
> Thanks, Joachim
>
>   
>
sudo systemctl stop systemd-resolved
sudo systemctl disable systemd-resolved.service

Rowland