ARC Network Problem - MultipleNatFound

Roon Core Machine

Roon 2.0 (1128) on Mac mini

Networking Gear & Setup Details

Provider: Fastweb Italy
Router: Fastgate ( Technicolor - MediaAccess FGA2130FWB)

Connected via Ethernet cable from Mac mini to ADSL Router.

Description of Issue

Always get this error:

“connectivity”: {“status”:“NetworkError”,“status_code”:504,“error”:“error: Error: ETIMEDOUT, response code: undefined, body: undefined connected? undefined”},
“external_ip”: {“actual_external_ip”:“”,“router_external_ip”:“”},
“status”: “status”: MultipleNatFound
“natpmp_autoconfig”: {“server_ip”:“”,“found_natpmp”:true},
“upnp_autoconfig”: {“server_ip”:“”,“found_upnp”:true}

UPnP enabled and working

I set port forwarding too

Please help…Thanks a lot

I have no experience with Fastweb. I know, though, Fastweb’s network behaves like a big nationwide NAT. Perhaps this is the issue.

Do you have a public IP address? Fastweb used to provide it if requested.

Take a look at similar threads (not specifically related to Roon) addressing the same issue on internet: