How to Disable IPv6
Tutorial on Turning off IPv6 for Linux
Should not need this
As per version 2.1.0 in January 2026, IPv6 Leaks should be protected WITHOUT requiring IPv6 to be disabled.
Test
But it’s important to note that this protection feature is experimental and you should test via any IP testing website. If you still need/want to disable IPv6, here’s the guide.
How to Disable IPv6 on Linux IF you want to.
Step 1:
Open config file:
sudo nano /etc/sysctl.conf
Step 2.
Add this to the end of the Config file:
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
net.ipv6.conf.wg0.disable_ipv6 = 1
Step 3.
Save the File
First hit Control + X. Then “Y” and enter to save it.
Step 4. Reload
You may or may not need to do this step, depending on your exact setup:
sudo sysctl -p
Step 5. Test
Test it:
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