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#!/bin/bash
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#!/bin/bash
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# $Id: alcasar-watchdog.sh 2539 2018-04-30 04:37:54Z tom.houdayer $
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# $Id: alcasar-watchdog.sh 2830 2020-06-04 20:02:48Z rexy $
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# alcasar-watchdog.sh
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# alcasar-watchdog.sh
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# by Rexy
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# by Rexy
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# This script is distributed under the Gnu General Public License (GPL)
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# This script is distributed under the Gnu General Public License (GPL)
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# - Ce script prévient les usagers de l'indisponibilité de l'accès Internet
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# - Ce script prévient les usagers de l'indisponibilité de l'accès Internet
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		LAN_DOWN="1"
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		LAN_DOWN="1"
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	fi
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	fi
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	# Default GW testing
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	# Default GW testing
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	if [ $LAN_DOWN -eq "0" ]
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	if [ $LAN_DOWN -eq "0" ]
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		then
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		then
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		IP_GW=`/sbin/ip route list|grep ^default|cut -d" " -f3`
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		GW_EXIST=`/sbin/ip route list|grep ^default|wc -l`
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		arp_reply=`/usr/sbin/arping -I$EXTIF -c1 $IP_GW|grep response|cut -d" " -f2`
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		if [ $arp_reply -eq "0" ]
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		if [ $GW_EXIST -eq "0" ] # no GW defined !
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			then
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			then
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			systemctl restart network
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		else
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			IP_GW=`/sbin/ip route list|grep ^default|cut -d" " -f3`
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			arp_reply=`/usr/sbin/arping -I$EXTIF -c1 $IP_GW|grep response|cut -d" " -f2`
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			if [ $arp_reply -eq "0" ]
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				then
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			LAN_DOWN="2"
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				LAN_DOWN="2"
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			fi
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		fi
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		fi
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	fi
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	fi
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	# if LAN pb detected, users are warned
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	# if LAN pb detected, users are warned
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	if [ $LAN_DOWN != "0" ]
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	if [ $LAN_DOWN != "0" ]
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		then
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		then