Has anyone played around with this.
http://playground.arduino.cc/Code/SerialIP
I used to use SLIP many years ago on old Unix machines, and if this works it would allow an Arduino to
connect to the Net without an Ethernet Shield.
The downside of course is its slow , but if you dont care about speed its a cheap way to get your Arduino on the Net.
You obvioulsy have to provide a SLIP Server to connect the Arduino too, but Win XP and Linux both have
SLIP capability to do this , even though the Docs are pretty thin.