Hi, >> struct socket *guestsock; >> error = sock_create(PF_UNIX, SOCK_DGRAM, 0, &guestsock); > It looks OK to my eyes. I found the error. I wanted to set the socket up too early in the boot process, when the unix protocol is not yet registered with the networking core. [snip] > Especially try to get value of "error". Jep, that one helped. Thanks for your help, Patrick "petschge" Kilian -- Ein Passender Vergleich wuerde einen Braunkohletagebaufoerderbagger mit einbeziehen. Dieser ist zu Strassen so kompatibel wie Notes zu SMTP. -- Jürgen P. Meier in d.a.s.r -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/