If I create a new torrent, does CGNAT (carrier-grade network address translation) prevent me from being an initial seeder of that torrent? I’ve made test torrents before and noticed that none of them seemed to be downloadable. Seeding the test torrents on a VPS of mine with a public IP has surprisingly worked before.
I can download and upload in my torrent client just fine, so I know my ISP isn’t (intentionally) blocking and firewalling torrents.
It’s not ideal, you won’t be able to seed/upload to any other firewalled (non port forwarded) peers.
But technically any connectable (port forwarded) peers connecting to you will still be able to download from you, so you’d still be able to seed in that sense. That does mean you’re only initial seeding to peers that have their own ports open/forwarded.
Yup that would work fine, you can participate in torrent swarms that contain other connectable peers and that’s usually how most torrent swarms are. You’ll probably have trouble with the random low seed torrents e.g. a torrent with one lone seed who also has no ports open, that seed won’t be able to send you any torrent data.