Yes. It just means the MP Server binds to all IP adresses on that computer, if I'm not wrong.Should it really say address 0.0.0.0?
You should put a fixed port in there. The default is 0 and 0 means MP2-Server is selecting a random port at every startup.Why should I put zero in there and not a fixed port, e.g. the same default that MPExt. uses?