ARC unable to access Roon Core after new ISP

[Justin_Newman]

Roon Core Machine

Nucleus
Roon version - 2.0 (build 1311) production
RoonOS version - 1.0 (build 259) production
OS version - RoonOS 1.0 (build 259) production

Networking Gear & Setup Details

ISP Community Fiber https://communityfibre.co.uk/
Adtran SDX 631q (modem) SDX 630 Series
amplifi-hd (router) AmpliFi | Faster, Whole-Home Wi-Fi

• Ethernet connection to Roon Nucleus
• Ethernet connection to Synology NAS
• Ethernet connection to PC

Description of Issue

I have moved to a new ISP (Community Fiber) but am only using their modem and my old amplifi-hd router but am now no longer able to reach the Roon Core through Roon ARC when outside of my network.

I was previous with Virgin Media (ISP), who provided a combined modem/router and so I had the amplifi-hd router in ‘bridge mode’ but not currently.

I have tried setting up port forwarding, using various PORT (around 55005), and also manually configured a static IP address (192.168.147.2) for the Nucleus but still cannot access it via ARC.

I have followed the steps in the Port Forwarding guidance I found here here https://help.roonlabs.com/portal/en/kb/articles/arc-port-forwarding
Any help or suggestions will be appreciated.

I get the below message in Roon.

Diagnostic Data for Roon Support

{“ipv4_connectivity”: {“status”:“NetworkError”,“status_code”:504,“error”:“error: Error: ETIMEDOUT, response code: undefined, body: undefined connected? undefined”},
“external_ip”: {“actual_external_ip”:“45.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”:“192.168.147.1”,“found_upnp”:true}}

[Menzies-Old]

@Justin_Newman

Community Fiber

Hi @Justin_Newman

I’m just a fellow Roon user.

Welcome to the community.

You appear to have a multinat error.

“status”: “status”: MultipleNatFound

The steps you haven taken appear correct, but having a quick search of the your new ISP indicates they operate a carrier grade NAT, CGNAT.

I think you’ll need to contact them to see if you can be given a private IP address.

For info
https://forums.thinkbroadband.com/fibre/4741874-community-fibre-gbps-now-cgnat.html