There are no IPv6 Anonymity Distribution Gateways featuring an IPv6 firewall yet. Therefore deactivating it to prevent leaks.
For better security.
1. Download Whonix's Signing Key.
wget https://www.whonix.org/patrick.asc
Users can check Whonix Signing Key for better security.
2. Add Whonix's signing key.
sudo apt-key --keyring /etc/apt/trusted.gpg.d/whonix.gpg add ~/patrick.asc
3. Add Whonix's APT repository.
echo "deb https://deb.whonix.org buster main contrib non-free" | sudo tee /etc/apt/sources.list.d/whonix.list
4. Update your package lists.
sudo apt-get update
5. Install ipv6-disable.
sudo apt-get install ipv6-disable
Can be build using standard Debian package build tools such as:
dpkg-buildpackage -b
See instructions. (Replace package-name with the actual name of this package.)
ipv6-disable requires donations to stay alive!