[Samba] DNS problem ubuntu server 20.04

[Rowland penny]

On 15/05/2020 14:55, L.P.H. van Belle via samba wrote:
>> That is possible on a Unix domain member, but, in my opinion,
>> you would
>> have to remove systemd-resolve on a DC
>>
>> Run <sudo netstat -plnt | grep '53'> on a newly installed
>> Ubuntu 20.04
>> and you get this:
>>
>> tcp        0      0 127.0.0.53:53 0.0.0.0:*               LISTEN
>> 451/systemd-resolve
>>
>> This would interfere with the AD dns server.
>>
> No, that a wrong understanding in my optinion.
>
> Per example. The client requests.

On a client that doesn't run a separate dns server it will work, I can 
prove this, but you can only run one server on port 53 on a Samba AD DC 
and that server has to be either the internal dns server or Bind9. If 
you have systemd-resolve running on a DC, you are not using the dns 
server you think you are.

Rowland