Ok, last addition.
Found out that the homeserver and the MDT IP gateway only support tunneling. In experte 4.7 it seems you can only add a multicast gateway to the configuration. My EIBD deamon on the VM starts as well as tunneling server with the following startup sequence:
eibd –trace=5 –listen-local –Tunnelling –Discovery –GroupCache ipt:192.168.178.200 –Server
Does anybody know how to start it as router with setting it up to route towards my gateway at 192.168.178.200?