Come across a server with the following setup.
Server has 2x NICs.
It is a DC for a site and runs VM's.
One of the those VM's is an rdp box etc...
The deal is that one of the IP's has been used as a Virtual Network Switch for the VM(s).
The other NIC is meant for the network as its a DC, fileshare etc...
This is a small site.
Some clients when pinged are getting back IP 192.168.1.15 instead of lets say 192.168.1.20.
As one NIC is for HyperV and the other is Usual Network stuff.
This is causing some issues with FQDN of servers etc... for example the mail server cannot be located under the fqdn of mailserver.dom.lan only its netbios name of mailserver.
Please advise where I should start. Network has had a 2003 box demoted, Other servers are 2008r2 and 2012r2. 2003 DC has just been demoted so the domain functional level is still 2003 at present.
Many thanks in advance.