UPnP exists and allow devices to ask the router to open a port to them.

Fidelix · 2024-10-16T12:41:33 1729082493

UPnP is useless with CGNAT (Carrier Grade NAT), which is what the op is talking about.

There are other ways to get seeding working, though, including IPV6, which is gaining adoption, so I don't agree with the OP.

Dalewyn · 2024-10-16T12:39:58 1729082398

UPnP is just automating the process of forwarding ports, CGNAT will still screw you sideways because you're behind a router you can't access or order around.

cosarara · 2024-10-16T12:39:41 1729082381

That doesnt help with CGNAT.