MicrosoftThanks! I couldn't figure out for the life of me how these other DCs were setup. I have to upgrade the DCs to newer OS's. I spun up a new DC. I had networking make sure a NAT address was assigned to the new DC. It wasn't at first. I had to manually add an A record in DNS for the NAT IP, but it would just disappear within minutes. I'd have two static A records. One with the real IP and one with the NAT'd IP. The NAT'd IP static A record would disappear within minutes. I'm guessing this is because the real IP was the IP bound to the NIC. When it would talk to the DNS server, it wouldn't know what the NAT'd IP was and would clear it. This was maybe caused by Dynamic DNS registration, even though it's a static IP with a static A record?
