Well I added 172.17.0.1 to the known proxies list (https://litter.catbox.moe/stki3l.png) and restarted Jellyfin. Nothing has changed.
The IP showed is always the same (https://litter.catbox.moe/g1kdet.png)
The IP showed is always the same (https://litter.catbox.moe/g1kdet.png)