nslookup response Default Server Unknown, Address ::1
When I do a nslookup, I get the response listed below:
Default Server: UnKnown
As far as I can verify, EDNS0 is disabled, PTR records exist for the server in the zone. Also, on the server, if I uncheck the IPv6 protocol in the TCP/IP properties of the NIC, this issue goes away.
Check the IPv6 settings to obtain DNS server address automatically
Change the preferred DNS server from ::1 to obtain DNS server address automatically.