[Samba] Can a DC have 2 IP addresses

[steve]

On Wed, 2014-02-26 at 15:43 +0100, Stéphane PURNELLE wrote:
> Yes, A DC can have 2 IP... bu when doing classic-upgrade or provision... 
> only one IP must be active.
> Otherwise DNs config part can choice bad IP, I don't know why but....

Hi
In this case, which IP should we choose as the primary DNS e.g. when
joining clients to the domain? Does it matter?
Cheers,
Steve