VPN over Tor on Qubes 4.2 not working - Whonix specific

Qubes-Whonix
1

I originally posted the question to the Qubes mailing list but the issue seems like Whonix specific issue now:
Mullvad VPN over Tor on Debian AppVM → MullvadProxy → sys-whonix → sys-firewall → sys-net works like a breeze.

The anon-whonix AppVM → MullvadProxy → sys-whonix → sys-firewall → sys-net chain doesn’t get any connection.

The only difference is the first AppVM. I tried Fedora and Debian AppVMs and those work well, without any issues. The anon-whonix doesn’t.

Code to set up the VPN is the one below.

Any ideas how to solve that?

2

UDP issue? See: UDP

For connection scheme User → Tor → VPN → Internet you need to configure the VPN to use TCP.

3

The connection and config files are purely TCP on port 443. It is selected on the mullvad account like that. Sry I didn’t mention that right away.

The Debian and Fedora AppVMs get through User → Tor → VPN → Internet nicely. Only the anon-whonix → Tor → VPN → Internet doesn’t work.