1. UPnP has to be enabled on your router.
2. Port 6112 has been redirected to your IP address for TCP/UDP traffic.
I am in a peculiar situation where I am behind a double NAT.
The reason for that is because my modem (Gigaset 201A) is running on an older firmware. There is a newer version, but there are reports that it locks up on heavy loads such as bittorrent. And the older version has a problem with bridge mode, it doesn't work.
So, I am stuck with a NAT on the modem, which supports UPnP, and another NAT on the router, which also supports UPnP. I believe the UPnP requests stop at the router and IP visibility is not possible because of that.
The host test tells me my IP is not visible, and recommends me to use Alloy. I have hosted 2 games succesfully, but in one of them I was disconnected from the server.
Is there anything I can do to improve this situation?