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.

How to disable ipv6 on Debian (console)
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