Issue with Roon ARC setup

[Geoff_Coupe]

I see that you are using SingTel - see this thread for a possible solution to your issue:

Singtel ISP / Asus GT AX-11000 Router Port forward help [Solved - Router Settings]

Same issue for me. I have a similar set up as Vic-Almada and the same error message as @aloke_gupta Roon Core Only I have a NUC 11 PAH i3 that is running audiolinux. I have confirmed with the vendor that this is not stopping ARC from connecting. Telecom provider: Singtel Router: Asus GT AX-11000. It has a wired lan connection with my Roon Core on the NUC. Port forwarding is enabled on the router. My error message is { “connectivity”: {“status”:“NetworkError”,“status_code”:504,“error”:“er…