#!/bin/bash
#fixes Raspbmc network dropping on the Raspberry Pi 
#also added the following to '/etc/network/interfaces'
#  auto eth0
#     iface eth0 inet dhcp

while true ; do
	LOGFILE=/home/pi/network-monitor.log

	if ifconfig eth0 | grep -q "inet addr:" ;
	then
		echo "$(date "+%m %d %Y %T") : Ethernet OK" >> $LOGFILE
		sleep 60
	else
		echo "$(date "+%m %d %Y %T") : Ethernet connection down! Attempting reconnection." >> $LOGFILE
		ifup --force eth0
		OUT=$? #save exit status of last command to decide what to do next
		if [ $OUT -eq 0 ] ; then
			STATE=$(ifconfig eth0 | grep "inet addr:")
			echo "$(date "+%m %d %Y %T") : Network connection reset. Current state is" $STATE >> $LOGFILE
		else
			echo "$(date "+%m %d %Y %T") : Failed to reset ethernet connection" >> $LOGFILE
		fi
		sleep 10
	fi
done