This might be an overkill, but you can host internal domain using public DNS. I've got a domain, and I've added multiple A records pointing to IPs of servers i

This might be an overkill, but you can host internal domain using public DNS. I've got a domain, and I've added multiple A records pointing to IPs of servers in my 192.168.X.Y NAT. This has a downside thought, that with short enough TTL, you may not be able to access your server during intermittent connectivity problems. I'm using letsencrypt through traefik for the certs.