I have added the first new 2012r2 DC to an existing domain, that is running on 2003 servers. After getting it all setup, ADDS replicating, DNS replicating, DHCP setup etc. Everything I think seems to be working but I've noticed an issue, I think? in DNS..
In the Forward Lookup Zones if I go into the properties of a zone, and go to the Name Servers tab. The entry for the new DC/DNS 'ZEUS' has an IP Address listed as 'Unknown'. Have I done something wrong, not set something up correctly? Is it normal that I have to manually enter this IP Address? I don't recall having to manually enter the Name Server IPs for other domains I've configured in the FLZ.
Image attached of the properties window. Any assistance would be greatly appreciated, I feel as though something isn't right here and this is the first time I've added a new DC to an existing domain. This server is supposed to be taking over as the two others listed are 2003 and slated for decommissioning.
It is a fresh install of 2012r2, fully updated, ADDS Role installed, promoted to DC, and I let replication take care of populating DNS on the new server. I haven't done much of any customized configuration, I thought allowing replication would take care of things.