This is initial configuration of SP 2013 Server -- one WFE/App, one DB server, both Windows Server 2012 -- SQL Server 2012. There are no firewalls between the two, but neither have internet access.
The PSCDiag just repeats the same misinformation, failed to create config database... db,port is an invalid or loopback address.
I say that it is misinformation because the config database is there after the run. I can't say that it completed everything it needed to do, but I can say that the error message is of no further help.
I've checked hosts files and nothing is marked. Any suggestions as to why psconfig is claiming that the address is no good?