The qBittorrent WebUI does not work with it set to a different host than
the target. This implementation does not compromise security, because
the referer is only unset if the real referer was the locally proxied
page. All other referers are passed through verbatim.
Since I currently do not have access to sayuri, sayuri’s migration is
not done yet. The host keys and wg-home-private-key secret still have to
be added.