The DXX-Rebirth tracker service allows you to find and join D1X-Rebirth and D2X-Rebirth Multiplayer games if the game host desires this. It was developed and is hosted by A Future Pilot.
Never before it was so easy to get into Multiplayer action. Just in the game select MULTIPLAYER > FIND LAN/ONLINE GAMES and the tracker will immediately send you all games that are currently running. Just select your game and you are done.