#!/bin/sh

export LC_ALL=C

if [ "$2" = "up" ]; then

	/sbin/ip route list dev "$1" | grep -q '^default' &&

		/usr/libexec/chrony-helper command online > /dev/null 2>&1

fi

if [ "$2" = "down" ]; then

	/sbin/ip route list | grep -q '^default' ||

		/usr/libexec/chrony-helper command offline > /dev/null 2>&1

fi

exit 0