if [ -f /var/run/$interface.route-fix -a -f /var/run/$interface.conf ]
then
    # get configuration from file, format:
    # local remote netmask {network real_netmask}*
    conf=`cat /var/run/$interface.conf`
    set $conf

    # restore original device configuration
    ip link set $interface down
    ip addr flush dev $interface
    ip addr add $1 peer $2 dev $interface
    ip link set $interface up
    shift 2

    # setup routes again
    while [ "$1" != "" ]
    do
        ip route add $1 dev $interface
        shift
    done

    #setup default route if our interface is the default routes interface
    if [ "$is_default_route" = "yes" -a -f /etc/default-route-interface ]
    then
        ip route add default dev $interface
    fi
fi