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)
Except it is explicitly being told to use a singular IP address here. So the engine is either going to go against explicit assignment or going to create a conflict within its own network. Neither of which are the expected behavior.
Just because people are self hosting, doesn’t mean they should be doing things incorrectly.