Hello Matthias, MS> You could add it to "/etc/ifconfig.sl0": Thanks, what I ended up with was... ! /sbin/slattach -h -s 115200 /dev/tty00 inet 192.168.0.128 192.168.0.129 up ...and it's working well. SLIP is something that I have wanted to learn for a long time and it will be very helpful for some projects that I have in mind. - Andy Ball