DuckDNS & NAT loopback

I’ve set up DuckDNS for my Home Assistant instance so I can access it externally, but I cannot use the DuckDNS URL when I’m on my local network. I’ve read that this might be due to NAT loopback not being supported in the router. Is there a workaround for this which doesn’t require another router?

Yes. Set up a reverse proxy like Caddy or Nginx.

How to do that?

No idea sorry. I’ve never had to. Though there’s quite a bit of info in the forum if you search.

Are you sure about that? Or is it just not configured?

Yes I’m sure it’s not supported.