Jellyfin DLNA for Meta Quest 2

[SciFinn]

Hello,
I have setup my very first home server running TrueNAS. On there I have successfully set up Jellyfin and Tailscale and it works: I can connect from anywhere to Jellyfin when I'm connected with Tailscale or I'm in my local network.
As I have some 3D movies I wanted to watch them on my Meta Quest 2. For this I use BigscreenVR. I enabled DLNA in my Jellyfin settings, my Quest is connected to the same network as the server. But I still cannot connect with DLNA, it says that there aren't any DLNA servers around.

I am very new to DLNA and I'm not sure what I did wrong. If anyone could help me I would be very grateful. Thanks!
My DLNA settings:

[Shadowghost]

Try lowering the alive message interval significantly, that might help.

[SciFinn]

Try lowering the alive message interval significantly, that might help.

I just tried 1 second and 5 seconds with Jellyfin restart but BigscreenVR still says that it couldn't find it.
Is there a way to test if DLNA is working outside BigscreenVR? I don't even know if its an issue with Jellyfin or with BigscreenVR

[TheDreadPirate]

Do you have other DLNA capable devices? Something like a PlayStation 3/4/5 or smart TV? Doesn't VLC support DLNA?

[Venson]

Do you use any kind of reverse proxy?

[SciFinn]

I don't have any other DLNA capable device. But I just tried VLC and it seems to be able to stream content from my PC when I start another Jellyfin server on that PC.
But my Jellyfin server from my home server doesn't show up.
All devices are in the same network. PC and server are connected via LAN. Quest by Wi-Fi. Wi-Fi should work, because I can connect to the Jellyfin server from my smartphone via Findroid.

Also I only use Tailscale. Don't know if that qualifies as reverse proxy...

[TheDreadPirate]

You are running Jellyfin in a Docker on your TrueNAS server, correct?

https://jellyfin.org/docs/general/networking/dlna/

DLNA is based on uPnP. DLNA will send a broadcast signal from Jellyfin. This broadcast is limited to Jellyfin's current subnet. If you are using docker, the network should use Host Mode, otherwise the broadcast signal will only be sent in the bridged network inside of docker.

What mode is your docker bridge set to for the Jellyfin container?

[Venson]

I don't have any other DLNA capable device. But I just tried VLC and it seems to be able to stream content from my PC when I start another Jellyfin server on that PC.
But my Jellyfin server from my home server doesn't show up.
All devices are in the same network. PC and server are connected via LAN. Quest by Wi-Fi. Wi-Fi should work, because I can connect to the Jellyfin server from my smartphone via Findroid.

Also I only use Tailscale. Don't know if that qualifies as reverse proxy...

DLNA only works on your local network. If you try to connect via Tailscale and try to use DLNA, that does not work by design.

[SciFinn]

I am using the jellyfin application from TrueCharts so it's not Docker. Tailscale shouldn't be a problem. Tailscale allows to connect to the server via local network or Tailscale. So the Quest should see the server without Tailscale in front.

[TheDreadPirate]

TrueCharts is a Docker implementation and the host mode network requirement still apply to TrueCharts.