[Samba] Samba and dnsmasq

[Rowland Penny]

On Wed, 19 Dec 2018 06:28:54 +1100
Nicolas via samba <samba at lists.samba.org> wrote:

> Hello everyone !
> 
> Well, I'm setting up a 'new' box with samba 4.9.3 on Ubuntu 18.04
> 
> Idea is to use Host OS for Domain Controler (dc1.smb.domain.tld) and
> a LXC container (ubuntu 18.04 too) as Domain Member with File Server 
> (fs.smb.domain.tld).
> 
> Administration through Windows OS will be done with a Qemu KVM.
> 
> Bad thing is that I get :
> 
> > Failed to bind to 0.0.0.0:53 TCP -
> > NT_STATUS_ADDRESS_ALREADY_ASSOCIATED
> 
> as dnsmasq is using port 53 :
> 
> > netstat -tulpn | grep ":53"
> > tcp        0      0 192.168.122.1:53 0.0.0.0:*               
> > LISTEN      1283/dnsmasq
> > tcp        0      0 10.0.3.1:53 0.0.0.0:*               LISTEN      
> > 1062/dnsmasq
> > tcp6       0      0 :::53 :::*                    LISTEN      
> > 1161/samba: task[dn
> > udp        0      0 192.168.122.1:53 
> > 0.0.0.0:*                           1283/dnsmasq
> > udp        0      0 10.0.3.1:53 0.0.0.0:*                           
> > 1062/dnsmasq
> > udp6       0      0 :::53 :::*                                
> > 1161/samba: task[dn
> Is there known solutions to resolve this, or should I use this kind
> of method :
> 
> https://medium.com/matematica-e-informatica/dnsmasq-and-samba4-ad-dc-74e69d46a1db
> 
> Thanks in advance for your time.
> 
> Nicolas
> 
> 

The best thing you can do is to:

apt-get remove dnsmasq

on the Samba AD DC.

You can run dnsmasq as a caching nameserver on the Unix clients, but
the only supported Samba AD DC DNS servers are the Samba internal DNS
server and Bind9, use of anything else is totally unsupported.

Rowland