Unable to connect to the host acnl

Issue:
Enter a description of your issue here, in full detail.
i cant connect to my friend s host which is public i have this error message : unable to connect to this host verify ur connection settings or contact the host owner to verify the settings of the host
thanks for ur help

System Information

  • Operating System: WINDOWS
  • CPU: R5 5600h
  • GPU: RTX 3070* Citra Version (found in title bar): LATEST
  • Game: ACNL ammiibo
  • Screenshot of Issue (include the full Citra window including titlebar):

Diagnostic Log
Upload your log file as an attachment by dragging & dropping.

In order to save a copy of the log, follow this guide:
https://community.citra-emu.org/t/how-to-upload-the-log-file/296

In order for us to provide better support, we need to see the log generated by citra. This guide will walk you through how you can obtain the log file: How to Upload the Log File

The host needs to forward the port that Citra is using in their router settings. Otherwise, nobody can connect to them, their router will block everyone. They need to refer to their router’s manual for this, as every router does this a bit differently.

Good thing to remember is that only "UDP or “UDP and TCP” protocols will work. TCP alone will not work.