Thank you, but I don't think that's what I need. I don't have multiple interfaces on the machine, I'm behind a NAT that can use multiple public IPs, the one that I'm using to connect to the internet (that's the one the pingpong servers are detecting) it's not the one I can port forward on. It's ...

Hi,
I've got multiple public IP addresses available I'd like to use a different one from the one you are autodetecting, is this possible?
Connecting directly to the IP is working at the moment but through the public listing is not.

Thank you.