Roon ARC app connectivity issues with iPhone and Astell & Kern (ref#6TFQ35)

[Antonio_Marcella]

What’s happening?

· I'm having trouble with Roon ARC

What best describes your issue with ARC

· Other

How can we help?

· I'm having trouble with my Nucleus hardware

Other options

· My Roon software won't start up

Describe the issue

Hello
the arc app on iPhone and Astell & kern so 4000 seems doesn’t work, this is the message that appear on nucleus settings on Roon app
{
"ipv4_connectivity": {"status":"NetworkError","status_code":504,"error":"error: Error: ETIMEDOUT, response code: undefined, body: undefined connected? undefined"},
"external_ip": {"actual_external_ip":"150.aaa.bbb.ccc","actual_external_ipv6":"null","router_external_ip":"192.168.1.184"},
"status": "status": MultipleNatFound
,
"natpmp_autoconfig": {"status":"NotFound"},
"upnp_autoconfig": {"server_ip":"192.168.68.1","found_upnp":true},
"multinat_autoconfig": {"status":"Failed","error":"Unknown Error code"}
}

Describe your network setup

Roon is connected to Starlink by deco system extenders

[vadim]

Hi @Antonio_Marcella,

Thank you for sharing the details.

Your issue is likely caused by the Starlink network configuration — Starlink does not support traditional port forwarding on standard residential plans because of Carrier-Grade NAT (CGNAT). This prevents Roon ARC from establishing a direct connection to your Core.

To work around this limitation, we recommend using Tailscale, which allows secure remote access without the need for port forwarding. You can follow the steps in our documentation here: https://help.roonlabs.com/portal/en/kb/articles/arc-and-tailscale-connect-to-roonserver-without-port-forwarding

Once you have it configured, please test ARC again and let us know how it goes.