[Samba] Machine choosing unexpected logonserver in multi-dc domain 4.2.1

[Rowland Penny]

On 23/04/15 03:39, Fred Smith wrote:
> I have the following setup in a samba 4.2.1 multi-dc domain
>
> DC1 - 10.10.2.50
> DC2 - 10.10.2.60
> DC3 - 192.168.103.2
>
> I have a site and subnet setup for each DC in Active Directory Sites
> and Services
>
> DC1 server in site DC1 with subnet 10.10.2.50/32
> DC2 server in site DC2 with subnet 10.10.2.0/24
> DC3 server in site DC3 with subnet 192.168.103.0/24
>
> DC3 has dhcpd setup giving machines on it's network IPs 192.168.103.100+
>
> When I login to a Win7 machine in DC3s site/network, it always gets
> logonserver DC1. I have tried leaving/join domain. The only way I can
> get it to use DC3 as logonserver is to stop samba on DC1 and DC2.
>
> I use the following command on the Win7 machine to verify the logonserver
>
> echo %logonserver%
>
> When I had this similar configuration in samba 4.1.x machines on DC3s
> network would always choose DC3 as the logonserver.

I do not think this is actually a samba4 AD problem, it is a general AD 
problem, try an internet search 'AD clients always use one DC'

Rowland