#!/bin/sh

# Sometimes the connection does down and we lose our route to
# the VPN.  Re-insert the route if it goes down.

IP_FMT="[0-9]*\.[0-9]*\.[0-9]*\.[0-9]*"
# This route should be the only hard-coded IP address
ROUTE=$(ip route | grep "^$IP_FMT via $IP_FMT dev")

# OpenVPN might not have started yet.  Repeat until route appears
while [ -z "$ROUTE" ]; do
  sleep 1
  ROUTE=$(ip route | grep "^$IP_FMT via $IP_FMT dev")
done

# Loop forever
while true; do
  # Check that the route still exists, add it if it doesn't
  if ! ip route | grep -q "$ROUTE"; then
    echo "Fixing routing..."
    ip route add $ROUTE
  fi
  sleep 1
done