I have a server which needs to communicate with another server (both win 2k8r2). One of them recently had an IP address change, and I suspect that the IPv6 address that the AD DNS server holds is now invalid. Nevermind, I switched off IPv6 on both servers. Now when I try to ping one from the other, it resolves the name to an IPv6 address, so the ping (and other services) fail.
An nslookup resolves two IPv6 address and the IPv4 address. However, despite IPv6 being turned off (on both ends) it's still trying to use IPv6. Any ideas?