Cannot setup Roon Arc in a Zyxel Modem/Router

[Carlos_Aguado]

Roon Core Machine

MacBook Pro M1 8GB

Networking Gear & Setup Details

Zyxel VMG3625-T50B
WIFI
I have a VPN installed but not active.

Number of Tracks in Library

Mainly Streaming Qobuz an about 500 tracks local

Description of Issue

Im new to Roon and I have been trying to setup my modem/router to use Roon arc, I activated UPnP, but still having the same problem here is the error I’m getting:

{
“ipv4_connectivity”: {“status”:“NetworkError”,“status_code”:504,“error”:“error: Error: ETIMEDOUT, response code: undefined, body: undefined connected? undefined”},
“external_ip”: {“actual_external_ip”:“195.aaa.bbb.ccc”,“actual_external_ipv6”:“null”,“router_external_ip”:“null”},
“natpmp_autoconfig”: {“status”:“NotFound”},
“upnp_autoconfig”: {“server_ip”:“192.168.1.1”,“found_upnp”:true,“error”:“Did not find UPnP service with WANIPConnection on network”}
}

Any advice?
Thanks!

[Suedkiez (Just a fellow user like you)]

You might have to enable NAT-T as well:

ARC on Fiber>ZYXEL router..Help needed

Okay, done default reset on the ZYXEL router and done a reboot. When router is up again, i activated UPnP + UPnP NAT-T function…pressed apply, and then 1 more reboot and… BAAM…Its working flawless as it should, Just to be clear… just these 2 settings is chanced in router, nothing else Maybe someone else have this solution in front

Server-type connections (such are the Roon Core acting as a server) might need this on Zyxel routers:

[CPE] CenturyLink NAT/UPnP Troubleshooting Guide

Wikipedia on NAT-T:

NAT traversal

And the manual for your router (in “8.4 The UPnP Screen”):

– https://download.zyxel.com/VMG3625-T50B/user_guide/VMG3625-T50B_1.pdf

[Neil_Small]

@Carlos_Aguado , please read my doc on setting up my Zyxel (also please note the comment at the bottom of the post from a “Fernando Pereira” is incorrect).

This configuration has worked flawlessly since I wrote this back in July 2022.

Ubiquiti UniFi Dream Machine UDM-US with Zyxel C3510XZ Modem/Router (Gateway) [Solution Edited into Post - Please Read OP's Full Post]

Following Roon’s documentation for router configuration, I was unsuccessful enabling ARC to connect to Roon Core. It turned out I needed a “Modem Port Forwarding rule”, which is outlined below. NOTE: One of the first tests I did was to connect my NUC (Roon Core) directly to my Zyxel Modem and see if Roon ARC could connect to Roon Core. This test was successful, leading me to believe there was a configuration that will work, even though I was getting an error after configuring UPnP and Port Forw…

[Carlos_Aguado]

I’ve read this, I don’t have another router, only the Zyxel Modem from my ISP, so just need to know if its possible to do it like that or I also need a router, sorry I’m not so good with all this stuff.

[Carlos_Aguado]

Both are active now, but still having the same error.

[Suedkiez (Just a fellow user like you)]

Rebooted everything as well?

[Carlos_Aguado]

Yes, also added the Port Forwarding rule, but I still have the error…

[Suedkiez (Just a fellow user like you)]

It might be your ISP. There are lots of other threads with the “Did not find UPnP service with WANIPConnection on network” error,
https://community.roonlabs.com/search?q=Did%20not%20find%20UPnP%20service%20with%20WANIPConnection%20on%20network

but I can’t see a common theme. Sometimes is was apparently a router misconfiguration and in other cases it seems to have been caused by the ISP using CG-NAT tech, which prevents port forwarding from working. What is your ISP?

One thing I notice is that you wrote “also added the Port Forwarding rule”. When you did that, did you turn off UPnP? Many routers don’t like it if both a manual forwarding rule and UPnP are enabled.

[Carlos_Aguado]

I think the problem might be related with the CG-NAT, I will try to communicate with my ISP, because I cannot find solution, thank you

[Suedkiez (Just a fellow user like you)]

Roon is also preparing a new version of ARC that should work with CG-NAT at least for many ISPs. If you feel comfortable, you could try that:

HELP MAKE ARC WORK FOR MORE USERS: Call for Volunteers with These Internet Service Providers to Join #EarlyAccess

Hi Everyone, A portion of the user population has been locked out of using ARC because their internet service provider uses IPv6-format addresses. For the past several months we’ve been working on enabling IPv6 support within Roon which will open up the possibility of using ARC for a large number of these users. We have enabled our initial implementation of IPv6 compatibility for users in Early Access. This change should have zero impact on your day-to-day usage of Roon and will require no mod…

Though in many cases it’s also just a call to the ISP that’s needed to take you off the CG-NAT and give you are real IPv4 address.

[Carlos_Aguado]

I will suspend my subscription until I got this sorted, I think it should be more user friendly, thanks everyone!