#! /bin/sh
set -x
netname=retiolum
myipv4=${1-10.7.7.-1}
v4num=${myipv4##*.}
printf "Retard check: "
if [ "$v4num" -gt 0 -a "$v4num" -lt "256" ];
then 
  printf "No retard detected\n"
  cd /etc/tinc/$netname/hosts
  printf "Check if ip is still free: "
  for i in `ls -1`; do
    if grep $myipv4 $i &>/dev/null ;then
      echo "Host IP already taken by $i! "
      exit 1
    fi
  done
  printf "Passed"
else
  printf "you are made of stupid. bailing out\n" 
  exit 1
fi