Roon Arc - what do i need to change to get it working?

Roon Core Machine

Processor: iMac 2020, 3.8GHz 8-Core Intel Core i7
Memory: 128GB 2667MHz DDR4
MacOS: Ventura 13.0

Networking Gear & Setup Details

My network setting is the following one:
IP Provider: Belong Australia
Modem: Belong 4353 FAST4353-A
Use Google Mesh and Roon Core Machine is connected via Ethernet to one of the 3 Google Mesh points

Description of Issue

Below error message trying to Download Roon ARC to connect from outside of home:

“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”:“null”},
“natpmp_autoconfig”: {“status”:“NotFound”},
“upnp_autoconfig”: {“server_ip”:“”,“found_upnp”:true,“error”:“<s:Envelope xmlns:s="\” s:encodingStyle="\“><s:Body><s:Fault>s:ClientUPnPError<UPnPError xmlns="urn:schemas-upnp-org:control-1-0">718ConflictInMappingEntry</s:Fault></s:Body></s:Envelope>”}

Welcome to the community, @Alex_Jacks.

The port forwarding diagnostics you’ve provided suggest that UPnP is not properly configured on your router or not working correctly.

Most likely, you have double NAT, so try putting the Belong into bridge (or pass-through) mode. Alternatively, setup port forwarding in this device; forward port 55000 to your Google Mesh router.

Please try the following steps in order:

  • Reboot your Roon Core and networking gear (router, modem, switches, etc.)
  • Try to enable UPnP/NATPMP in the web administration interface for the router
  • Try to manually open the port in your router’s port forwarding configuration
  • Make sure the IP/Port matches the Port listed in Roon → Settings → ARC
  • Check for any VPNs or Firewalls that might be interfering
  • Try to update your router firmware
  • Check if your modem is in Bridge mode and if not, try to place into Bridge mode

If you continue to experience difficulties, please tag the support team and include the following information:

  1. What is the make and model of your modem and router?
  2. Do you have any additional network hardware, like additional routers or managed switches?
  3. Who is your internet service provider and what is your geographic region?
  4. Is your Modem configured in Bridge Mode so that it operates only as a modem or do you have the ports forwarded on both?


Hi Martin

Thanks for the reply, I managed to sort it out, and hopefully what I did will be helpful to anyone else who has google mesh.

I had to do port forwarding from my imac to the Google wifi point, and also have port forwarding from my belong modem to the google wifi point, and it did the trick. So just had to open up the port twice, both on my internet provided modem and google wifi for 55002.

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