I am wondering whether DOSBox can do multiplayer multicasting. It's not IPX tunneling. It's something similar to ZSnes, Snes9X & MAME emulators or http://www.kaillera.com/ (however you spell it). Basically some old DOS games were 2 or more players on one PC.

This would be cool where DOSBox connects with other DOSBoxes around the world. Idea 1: the server would multicast the screen/game to the clients. The clients get to interact too, with keyboard & mouse input.

Or idea 2: all peers must have the exact same DOS files (some CRC32 checksum verifying can take place). then the server runs the game and the clients automatically get the execute game signals. Comparing CPU/register state with peers would help synchronisation.

If WinUAE Amiga games could do it with Kaillera then am sure DOSBox can do it too!