Damn you’re right, it doesn’t work out of the box like I expected. Have to admit that I never used it this way around. But it should work with --netns (network name spaces) which Wireguard uses: www.wireguard.com/netns/

Afaik it should work if you move Wireguard to it’s own namespace and than start qBittorrent with the new namespace (should even be doable without firejail).

@imetators @lemmy.dbzer0.com sorry for chasing you down that rabbit-hole, it sounded easier in my head