Roon ARC not ready with FritzBox Vodafone Cable in Germany (ref#V4CD5A)

Support ARC: Port Forwarding Help
1

Network Setup

· My only router was provided by my ISP

ARC Status

· ARC is *Not Ready*

Roon Error Code

· “natpmp_autoconfig”: {“status”:“NotFound”}, “upnp_autoconfig”: {“status”:“NotFound”} }

Have you successfully located and enabled the UPnP or NAT-PMP settings in your router's web UI?

· I've turned UPnP/ NAT-PMP on and ARC won't connect

Select the Diagnostic Keyword or Text String

· Something else

Don't give up yet.

· I'm stuck. I'd like to create a post to ask Roon Community for help.

Describe the issue

Roon ARC not ready, FritzBox Vodafone Cable (Germany)

Describe your network setup

FRITZ!Box 6591 Cable
MacBook Pro

Roon Error:

{
“ipv6_connectivity”: {“status”:“NetworkError”,“status_code”:504,“error”:“error: Error: ETIMEDOUT, response code: undefined, body: undefined connected? undefined”},
“ipv4_connectivity”: {“status”:“NetworkError”,“status_code”:504,“error”:“error: Error: ETIMEDOUT, response code: undefined, body: undefined connected? undefined”},
“external_ip”: {“actual_external_ip”:“95.hhh.iii.jjj”,“actual_external_ipv6”:“2a02:aaa:bbb:ccc:abc:acd:ade:aef”,“router_external_ip”:“null”},
“status”: “status”: MultipleNatFound
,
“natpmp_autoconfig”: {“status”:“NotFound”},
“upnp_autoconfig”: {“server_ip”:“192.168.178.1”,“found_upnp”:true}
}

2

Hi @Ingo_Koch1,

Thank you for your post. Vodafone Germany has broadly implemented Carrier-Grade Network Address Translation (CG-NAT) on their accounts, which will block port forwarding.

The simplest workaround is to install Tailscale on your RoonServer machine, the MacBook Pro. See here:

You could also configure your Fritz!Box for end-to-end IPv6 on your home network, similarly bypassing the need for IPv4 port forwarding. However, this is a more complicated step involving entering your router settings administration page and potentially other network hardware. We tend to recommend the former option, Tailscale.

1 Like