The eypgi box seems to have issues with the windows server dhcp server. Even after I have put them in different networks/vlans, the eypgi acting as dhcp will still stop the dhcp server on windows and it refuses to restart (even after reboot) until the eypgi dhcp is stopped. When that happens the next time the phones register they get on a different network and can't reprovision. So I found a registry tweak in windows server that forces it to ignore "rogue" dhcp on the network, however after that I noticed that it overrides the eypgi server even on the eypgi network side, and now all phones and clients on the eypgi network are getting the different network address from the windows server dhcp side.

Is there a way to tell Windows server not to do this or truly segregate the dhcp scopes/etc and still allow network traffic to route between the two?