I have an existing domain controller/ dns /dhcp server that has been working perfectly for about 100 clients for some months now. It is a Server 2010 R2 OS.
Today for no reason I can determine, it stopped resolving dns names for for my printers on WIndows 7 machines.
Name resolution works fine on Server 2003 and XP, but not on WIndows 7 or Server 2012.
NSlookup has the same problem. On XP it resolves correctly. On windows 7, it cannot find the dns server.
We made no configuration changes to the machine. We have rebooted it and restarted the DNS and DHCP services.
Other addresses resolves fine... it seems limited to our printers.
The only common thread I can see is that the addresses that don't resolve don't have IPV6 AAAA records.
I am totally stumped here. Thanks