Automatic IPv6 registration appears to be functional in Plex Media Server and the Plex Cloud. This may remove the need to manually craft URLs.
This appears to be all that’s required in PMS:
-
Settings→Network→Enable server support for IPv6 -
Open TCP 32400 in the firewall. IPv6 doesn’t require NAT or Port Forwarding, but does require the port to be open. Plex always listens on 32400.
IPv6 addresses appear to be published whether Remote Access is enabled or not. Remote Access is still useful for IPv4 and Relay.
There doesn’t seem to be any connectivity testing. The addresses are registered with MyPlex whether the ports are open or not.
It appears that Global Unicast and Unique Local IPv6 addresses are registered with MyPlex. Plex appears to treat both as Remote. Link Local addresses aren’t registered. I think the assumption is that IPv4 will be available on the LAN.
I know that iOS and Apple TV work well with IPv6 connections. I haven’t investigated other client types. The iOS Plex App appears to prefer IPv4 if it’s available.
