Désactiver IPv6

#!/bin/bash
clear
list_int=$(ls /sys/class/net)
echo  $list_int
echo " "

for interface in `echo $list_int | tr " " " "`
do 
	File=/etc/sysctl.conf
	if grep -q "net.ipv6.conf."$interface".disable_ipv6 = 1" "$File"
	then
		echo "Exclusion déjà présente"
	else
		echo "net.ipv6.conf."$interface".disable_ipv6 = 1" >> /etc/sysctl.conf
		echo "Interface" $interface " exclue de l'IPV6"
	fi
done 

for interface in `echo $list_int | tr " " " "`
do 
	sudo ip link set $interface down
	echo "interface "$interface" down"

	sudo ip link set $interface up
	echo "interface "$interface" up"
done

sudo systemctl restart networking.service
echo "Service Networking restarted"