If you are going to change IP address of a domain controller, there are a couple things you should do afterwards to ensure that the DNS is in order.

First, go ahead and make the network modifications on the domain controller (IP address, mask, gateway, DNS, etc.).

Then, register the changes with the DNS using:

ipconfig /registerdns

Then, use the following to ensure that the service records are properly updated in the DNS as well. This could really mess things up if not correct, so do the following to make sure:

dcdiag /fix