#!/bin/bash

max=10
interval=1
debug=1
count=0

function restartprog {
	echo killall $progname
	echo start_prog # whatever this is
	count=0
}

while true
do
	if `ping -t 1 -c 1 128.0.0.1 > /dev/null 2>&1`; then
		count=0
	else
		count=$(( $count + 1 ))
	fi
	if [ $count -gt $max ]; then
		restartprog
	fi
	[ $debug -gt 0 ] && echo test $count
	sleep $interval
done