all the containers change IP addresses frequently. For home assistant a static IP address of the proxy manager is mandatory in order to reach it. For jellyfin it is useful to see which device accesses jellyfin. If the IP always changes, it doesn’t work properly.
How do I fix a container IP with podman compose (or docker)
You can specify a fixed IP range for a container in the private address space instead of letting Docker pick one. You can also pick a specific IP on that range for each container. You can also attach to the host public interface and get an IP from your LAN DHCP, or pick a MAC adress so you can get the same IP address each time from DHCP (as well as a name on the LAN DNS if you want).