#!/bin/sh -

##-----------------------------------------------------------------------------
## Starting tunnel.
##-----------------------------------------------------------------------------
tunnel_start()
{
    echo "Starting tunnel..."
    modprobe ip_gre
    ip tunnel add neta mode gre \
        remote 82.XX.XX.254 local 87.XX.XX.249 ttl 255
    ip link set neta up
    ip addr add 10.1.15.1 dev neta
    ip route add 192.168.1.0/24 dev neta
}

##-----------------------------------------------------------------------------
## Stopping tunnel.
##-----------------------------------------------------------------------------
tunnel_stop()
{
    echo "Stopping tunnel..."
    ip link set neta down
    ip tunnel del neta
}

##-----------------------------------------------------------------------------
## Restarting tunnel.
##-----------------------------------------------------------------------------
tunnel_restart()
{
    tunnel_stop
    tunnel_start
}


##-----------------------------------------------------------------------------
## Main.
##-----------------------------------------------------------------------------
case "$1" in
'start')
    tunnel_start
    ;;
'stop')
    tunnel_stop
    ;;
'restart')
    tunnel_restart
    ;;
*)
    ifconfig neta
esac