I have a small home network with a Windows 2012 R2 Essentials DC that is also acting as a DNS Server. All the computers connect to this as primary. Physical machine. I also have a secondary VM that is Windows 2012 R2 Server that is a secondary DC and also secondary Domain Controller. If the primary is offline, all lookups on the net are really slow. Even if I reboot the computer, nslookup still shows the primary as the one being used. I get:
nslookup DNS request timed out
timeout ws 2 seconds
Default Server: Unknown
Secondary say is 10.0.0.8. Any idea what's happening or is this normal?
EDiT: Even when I change the scope and set the workstations to look at the secondary DNS first, still have the same slowness, just nslookup responds quickly and correctly.