ARC / TP-Link Archer C7 / no connection

Roon Core Machine

MacBook M1 2020

Networking Gear & Setup Details

TP-Link Archer C7 connect to the cable modem

Connected Audio Devices

Zen Dac / Zen Can

Number of Tracks in Library

Description of Issue

I am unable to connect - I still see error 504 (the now famous NAT layer 2). My router is TP-Link Archer C7 which I connect to the cable modem. Unfortunately, my ISP (Cable TV) says they can’t change any settings … Does that mean I won’t use ARC? Oh, you did it wrong!

Diagnostic data below:
“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”: {“status”:“NotFound”},
“upnp_autoconfig”: {“server_ip”:“”,“found_upnp”:true}

Hey @Mariusz_Kapuscinski,

Thanks for providing the details above. As a follow up:

  1. Who is your internet service provider?
  2. Please list the details of the hardware your TP-Link Archer C7 is connected to
  3. Do you have any additional network hardware, like additional routers or managed switches?
  4. Does your network have any VPNs, proxy servers, or enterprise-grade security?
  5. How is your Roon core connect to the internet?

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