====== Désactiver ipv6 sur Debian ======

1. Open a terminal window.

2. Issue the command sudo nano /etc/sysctl.conf

3. Add the following at the bottom of the file:
<code>
net.ipv6.conf.all.disable_ipv6 = 1

net.ipv6.conf.default.disable_ipv6 = 1

net.ipv6.conf.lo.disable_ipv6 = 1

net.ipv6.conf.tun0.disable_ipv6 = 1
</code>
4. Save and close the file.

5. Reboot the machine.

To re-enable IPv6, remove the above lines from /etc/sysctl.conf and reboot the machine.