[Samba] samba_dnsupdate

[Paul Littlefield]

On 02/03/2020 10:49, Rowland penny via samba wrote:
> Does your DC have a fixed IP and if not, why not ?

Yes, using netplan in Ubuntu 18.04...

network:
   ethernets:
     ens18:
       addresses:
       - 130.130.0.218/16
       gateway4: 130.130.0.1
       nameservers:
         addresses:
         - 130.130.0.218
         - 130.130.0.219
         search:
         - mydomain.com
       optional: true
   version: 2



It's just happened AGAIN... the main servers A records have gone and replaced by IPv6 ones.

I'm using the Samba 4 Internal DNS and ISC DHCP Server and have 'ddns-update-style none;' in the DHCP server config.

Questions...

1. How do I turn on Samba 4 AD DC logging for DNS updates?

2. Can I watch for DNS requests in tcpdump?

3. I have another DC which is replicating fine with this DC and after I have REMOVED the AAAA IPv6 entries + ADDED the A records in _either_ DC it lasts for a while then they get removed again!


Paully