/sbin/ifup-local

#!/bin/sh
if [[ “$1” == “eth0” ]]
then
/sbin/ip tunnel add tun0 mode gre remote 113.10.244.229 local 211.149.235.143 ttl 255
/sbin/ip link set tun0 up
/sbin/ip addr add 10.100.100.100 dev tun0
/sbin/ip route add 10.100.100.200 dev tun0
fi