I'd like to host lemmy on my LAN and I'd be the only user, no registration open. I would subscribe to communities on other instances and my instance would get the posts and comments. would that work? I don't need it to be accessible from the internet.
If you have CGNAT, you’ll need to use IPv6 to get connections from the internet at large. The downside is that IPv4-only instances won’t be able to communicate with you.