1 February 2019 NEWS
We strongly urge all Linux users to install the latest Mullvad VPN app version and upgrade their Linux kernel to at least version 4.8.0 to ensure a working kill switch.
Linux kernels 4.4.0 and older do not support certain firewalls, which means that the Mullvad VPN app kill switch doesn't work for those kernels.
How do I upgrade my kernel?
If you're running Ubuntu 16.04, open a terminal and run this command:
sudo apt-get install linux-generic-hwe-16.04
We only support app versions 2019.1 and newer. Therefore, we urge you to never downgrade to older versions.
Distributions that we have tested:
Regardless of whichever distribution you have, follow the step-by-step guide above.
We have no plans of implementing workarounds for the affected kernel versions.
Windows and macOS users are not affected by this issue in any way, but we always encourage all users to upgrade to the latest app.