[Samba] Custom dns_update_list file

[Andrew Bartlett]

On Wed, 2022-02-09 at 17:50 +0100, Victor Rodriguez via samba wrote:
> Hello,
> 
> I have the need to set specific IPs in DNS to allow clients to
> correctly 
> communicate with Samba. I archieve this editing 
> samba/private/dns_update_list and replacing the A record for the
> domain. 
> This works until some package update replaces it with the default
> one.
> 
> Is there any way to properly set a custom dns_update_list that does
> not 
> get overwritten?
> 
> I can't use the interfaces directive in smb.conf as the same
> interface 
> has more than one IP.

Do you just want to set a single IP?

If so, the 'dns update command' can be changed from the default to
specify an option: --current-ip

  --current-ip=CURRENT_IP
                        IP address to update DNS to match (helpful if
behind
                        NAT, valid multiple times, defaults to values
from
                        interfaces=)

I added that for exactly this purpose, after learning how cloud and container "public IP" networking works.

Andrew Bartlett

-- 
Andrew Bartlett (he/him)       https://samba.org/~abartlet/
Samba Team Member (since 2001) https://samba.org
Samba Team Lead, Catalyst IT   https://catalyst.net.nz/services/samba

Samba Development and Support, Catalyst IT - Expert Open Source
Solutions