Trying to add a dc to a windows 2003 forest functional level 2003. Get this error:
A domain controller running Windows Server 2008, Windows Server 2008 R2, or Windows Server 2012 could not be located in this domain. To install a read-only domain controller, the domain must have a domain controller running Windows Server 2008, Windows Server 2008 R2, or Windows Server 2012.
There is no 2008 server in the mix.