> The trouble is that on ppp0, I don't see any MAC address coming, but > 0:0:0:0:0:0
PPP is the point-to-point tunneling protocol. There are no MAC addresses with PPP. So there is nothing to check. > Is there any way to get the HW addr of my internet connection to accept it > on the other side ? There is no HW addr of your interconnection visible to the other side, if you use a ppp based connection. It will be best if you step back a bit, and think about what you are really trying to accomplish. Checking your preconceptions with tcpdump or ethereal, would also be an educational experience. best regards Patrick
