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#!/bin/bash
# Performs arping to gateway from all IP's

source /etc/profile

gateway="$(route -n|awk '$4 == "UG" {print$2}')"
log="/opt/postupcp/run_arping.log"
echo "----$(date)----" >> $log

do_arping() {
sleeptime=$(( ( $RANDOM % 300 ) + 1 ))
echo "Sleeping for $sleeptime seconds" >> $log
sleep $sleeptime
for ip in $(ip -f inet a | awk -F'[ /]' '/inet.*global/ {print $6}');do
    arping -c 1 -w 1 -s $ip $gateway >> $log
done
}

do_arping