Just because the destination IP address is not a LAN address? That’s not misconfiguration, that’s a legitimate use of NAT reflection/loopback. If that’s how it determines who is streaming remotely then just run it behind nginx that forgets to set the correct headers.
Edit: Apparently Plex centrally relays all the traffic? Self-hosted my 🍑, it’s not self-hosted if you need to rely on their server.
Just because the destination IP address is not a LAN address? That’s not misconfiguration, that’s a legitimate use of NAT reflection/loopback. If that’s how it determines who is streaming remotely then just run it behind nginx that forgets to set the correct headers.
Edit: Apparently Plex centrally relays all the traffic? Self-hosted my 🍑, it’s not self-hosted if you need to rely on their server.