Have an odd one. Just built a 2016 server (VM) and done the usually changed the DHCP address to a static as configured on the NIC. However rather than updating the DNS record it keeps adding the wrong address in teh DNS entry.
I have checked the DHCP server and deleted the original lease.
I have deleted the DNS entry and and run an registerdns command from server.
I have gone into registry of server and cleaned out any old NIC entries.
Not sure what where to go next....