Thanks for the feature request on the grml-mailinglist, Tong.

Something like the following (but use lsb-infrastructure instead of echo):

#!/bin/sh
case "$1" in
start)
  echo "Starting kqemu: "
  /sbin/modprobe kqemu major=0          load the kernel module
  mknod /dev/kqemu c 250 0              # create the device
  chmod 666 /dev/kqemu /dev/net/tun     # adjust permissions
  ;;
stop)
  echo "Stopping kqemu: "
  /sbin/rmmod kqemu
  ;;
restart)
  /sbin/modprobe kqemu major=0
  ;;
*)
  ;;
esac