[ulrikrasmussen]

I was very fascinated by networks and network protocols back then, so often at LANs I would play around with a tool called "netXray" which could capture network packets (basically a proprietary equivalent of Wireshark).

I could spend a lot of time trying to decipher the data that games would send on the network, and I also tried to mess with my friends by replaying modified UDP packets (rarely had an effect, though). As far as I remember, I found the MAC address issue while playing around with netXray :).