slmodem init script should look for /dev/ppp node i.e. +test ! -z /dev/ppp && /bin/mknod /dev/ppp c 108 0 I encounter an error, because I use udev without tarball, so /dev/ppp is missing by default. I don't know if this fix is correct in the sense of udev. Maybe it should go somewhere into hotplug or modules or somewhere else. What's best?
I've inserted creation of /dev/ppp in slmodem-2.9.10-r3. However, I cannot guarantee that node will be there after you reboot. Best mode to be sure it gets created is to add ppp_generic to autoloaded modules list (udev will create the /dev/ppp).