online IPv6 sucks :(

dhclient.sh

#!/bin/bash
# Relaunch dhclient when it crash...

mailaddr="[email protected]"
IPv6=true

pgrep -f dhclient6 > /dev/null
status=$?
if [[ $status != 0 ]]; then
    IPv6=false
fi

ping6 -q -c1 free.fr > /dev/null
status=$?
if [[ $status != 0 ]]; then
    IPv6=false
fi

if [[ $IPv6 == false ]]; then
    echo "IPv6 not functional, relaunched dhclient6!" \
    | mail -s "Dhclient for IPv6 relaunched on $(hostname -f)" $mailaddr
    /sbin/ifdown eth0
    pkill -9 -f dhclient6 > /dev/null
    /sbin/ifup eth0
    ping6 -q -c1 free.fr > /dev/null
fi