BRT-AC828 access LAN server from LAN via FQDN (external interface)

Hi,

I have a strange issue: I have a server behind the router. I have the necessary ports mapped via port forwarding.

If the server is accessed from outside (from internet), everything is fine.

If the server is accessed from inside the LAN, it's (almost) mandatory to access it ONLY via local IP. If accessed via FQDN, the response of the server to LAN requests are extremely slow (the public IP has a fully qualified domain name, registered in a public DNS).

So, accessing the inside server...

BRT-AC828 access LAN server from LAN via FQDN (external interface)