A friend has set up a tracker for testing purposes. When he creates a torrent, I can open it in ordinary bittorrent clients and download/upload as usual. The tracker url in the meta info is in the form http://192.168.1.X/somefolder/announce.php
How can this work? Isn't that a local ip from within a LAN? Still my bittorrent client can find the tracker and communicate with it over the internet.