#!/bin/bash
 
IF=$1
STATUS=$2
DEFAULT_ROUTER=`/sbin/route -n | grep ppp0 | head -1 | awk '{print $2}'`
DEFAULT_DESTINATION=`/sbin/route -n | grep ppp0 | head -1 | awk '{print $1}'`
 
if [ "$IF" == "ppp0" ]
then
    case "$2" in
        up)
                /sbin/route del default gw ${DEFAULT_ROUTER}
        /sbin/route add -net default gw ${DEFAULT_ROUTER} netmask ${DEFAULT_DESTINATION} dev ppp0 metric 0
                logger -s "Updated ppp0 default route with metric 0"
        ;;
              down)
                /sbin/route del default gw ${DEFAULT_ROUTER}
                logger -s "Deleted ppp0 default route"
                ;;
        *)
        ;;
    esac
fi