Our business recently murge with another one. We also need to murge both network with a VPN for the moment. My issue is that both network have the same subnet (10.0.0.0 /24).
On the branch office I have a Windows 2008 domain controller. I have multiple GPO, dns server, Active directory, ect...
I don't think that I can change the IP address of this DC like this. I want to know what should I do to prevent all possible trouble.