I use KPPP in Sabayon, to connect to the web via my internal UMTS card. When I do so as normal user, KPPP tries to connect and then brings an error message "Error 4". When I click on "Details" it says, that I have to enter the command "mknod /ppp/dev c 108 0" as root.
Ok, I do so and now I can connect as user with KPPP.
But only till the next reboot.
How can I make this permanently, so I don't need to enter the command each time?