Jellyfin Server not binding to LAN address

[chilled]

Having same issue on bare metal fresh install of Debian Bookworm with networkmanager (I use the PC as desktop and server but is not on 24/7). No proxy, no vm, no docker container, no https, only LAN access and same firewall rules I've used for years.

The only thing that's worked for me is login in and restarting the systemd unit: # systemctl restart jellyfin.service.

I've been using Jellyfin since at least three (3) years ago with the same PC/OS/installation combo without issues until yesterday, when I decided to make a clean up and reinstall the OS.

Can you stop jellyfin, delete network.xml, and start jellyfin?  It will regenerate the file with defaults.  A couple other people weird network issues and deleting this file helped them.

Nothing changed unfortunately, im calling that it's a debian issue
Update: it was a debian issue
had to replace this line

Code:

allow-hotplug enp4s0

with

Code:

auto enp4s0

this makes me honestly doubt the good reputation about debians stability, if an update breaks your networking randomly

Are you sure that solved the issue? It has been the default in Debian for the /etc/network/interfaces file since I can remember.