Roon ARC it stopped working suddenly

Support ARC: Port Forwarding Help
1

Hi, I have a sudden problem with Roon ARC, it stopped working from one day to the next. Nothing has changed in the hardware configuration.

Roon Server installed on a Windows 11 PC, with the firewall disabled. The server is connected directly to the router with a cable.

I use one router from the Netia network, HG8245X6-10, UPnP is set to enabled.

{
“ipv4_connectivity”: {“status”:“NetworkError”,“status_code”:504,“error”:“error: Error: ETIMEDOUT, response code: undefined, body: undefined connected? undefined”},
“external_ip”: {“actual_external_ip”:“84.ddd.eee.fff”,“actual_external_ipv6”:“null”,“router_external_ip”:“100.aaa.bbb.ccc”},
“status”: “status”: MultipleNatFound
,
“natpmp_autoconfig”: {“status”:“NotFound”},
“upnp_autoconfig”: {“server_ip”:“192.168.100.1”,“found_upnp”:true}
}

2

It looks like your ISP has migrated your Internet connection to a CG-NAT service.

The ‘MultipleNatFound’ indicates the there are two or more layers of NAT. This can only happen if a router is added or if the Internet service is migrated to CG-NAT.

In addition, your router as been assigned an ip address starting with ‘100.’. Whilst not conclusive, this is also indicative of a CG-NAT layer on the part of your ISP because ip addresses in the range 100.64.0.0 to 100.127.255.255 are reserved for this purpose.

To fix this you will have to contact your ISP and ask for a public ip address that supports port forwarding.

Alternatively, you could use Tailscale to avoid the need for port forwarding. See:

And

3

Hi @Lukasz_Kowalczyk,

It’s our understanding that Netia is in the processing of migrating their residential-tier accounts to Carrier-Grade Network Address Translation (CG-NAT), which blocks the upstream connection to ARC.

We recommend installing Tailscale on your RoonServer machine and phone to create a proxy-mesh connection instead. This workaround is secure and reliable and impervious to your ISP’s translation layer.

Thank you!

4

Thanks for response.

Need information, installing Tailscale for all mobile devices and loggin, and how it works, automatically turn on? So first I have to manually enable tailscale and then roon arc? it’s a bothersome thing.

I have a NordVpn license so I’ll probably try that. I assume a public IP address will solve the problem?

My ISP has confirmed the implementation of the service CG-NAT, and the only thing they can do is assign a static public IP address for a fee.

5

I used Nord VPN, work perfect, automatically start. Thanks for support, for now problem resolved.

6

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