Ping, Amiga<>PC LAN, dual Ethernet cards, filesharing probs & fixes

[AmiGR]

Connecting 3 machines together doesn't require a router. It needs either a switch (or in the worst case hub) or 2 ethernet cards in one machine (on the same subnet).

[AmiGR]

It is a DSL Modem with a router secretly built-in to screw up P2P networks. So I went in and disabled the routing. It is now a pure DSL Modem.

A router is never "secretly built-in to screw up P2P networks", it's there so that you can hook up more than one machine to the internet. You need to configure it, to use P2P networks.