Just wanted to say that people should have in mind that this is in fact a beta which means you can't btich about things not working for you(generaly speaking). Thats what it's for.
Just saying...
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For devs, I have tried several Netgear Routers with UPNP enabled, it still says "UPNP Enabled Router Not Found" and I tried to create a DMZ for the Xbox still not workinng, ports are not connecting, so UPNP needs to be improved, not complaining or anythign just thought to give some feedback.