Minecraft Linux server – force use of IPv4

Hi there. This is a quick one. Bellow instructions how to disable ipv6 on Debian Linux.

1. Log in to your machine in console mode

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

3. Add the following code at the bottom:

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1

4. Save, close the file.

5. Reboot.

If you want re-enable IPv6, remove the above lines from

/etc/sysctl.conf

and reboot the machine.