ARC no connection (Vodafone Gigacube)

Roon Core Ubuntu LTSB Server

Vodafone Gigacube Router (Mobile, 4G)
Upnp enabled
There is no option for port forwarding.

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

I am not a network specialist.
Vodafone offer not a public ip address- is this necessary?

Connection the Core via Ethernet->Switch->Gigacube

Read and checked


Edit: Ubuntu firewall disabled with no result

On most Vodafone networks you only get a shared IP that is Firewalled by Vodafone. So no incoming port isn’t working on those Networks.

Thanks Basti.

So roon use a technology wich is not usable for many users?
I can start my robotic vacuum cleaner from remote, have a look to my living room via 20usd camera from everywhere but can’t use the great 2.0 arc update for a 699usd licence?

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Depends on what you want. Your vacuum cleaner and the camera use “the cloud” to connect. Which means the producer exactly knows when the vacuum cleaner is running, and how dirty your living room is… And for the camera… Well, I would not use it…

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Hi Daniel

If you – like me – are on Vodafone in Germany then this is a known issue, as I discovered when searching here yesterday. The good news is that it’s apparently being worked on:

But Skype solved the issue of port tunnelling nearly 20 years ago. Roon’s tech stack (.Net) and implementation is for the birds.

Sure, and it is no big problem to fix this. BUT you need a proxy outside your network that both can connect to. That means more infrastructure is required and less privacy for the users. Its all possible and it just depends on what you want.

And if you ask for my personal opinion - get a different provider, as the problem is the provider giving you no real network access…

That’s a valid point of view, but it’s not an option for everyone. Some people get into a 24-month contract with a provider before realising that they’d be better off elsewhere. Others don’t really have a choice – in my building (in Berlin) the options are (1) fast cable internet with Vodafone or (2) much slower DSL through Telekom’s copper wires.

Vodafone Germany users are comparing notes in the useful thread I linked to above:

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Hi @meldano,

Please see the staff post here for more context and for a lost of known workarounds for Vodafone Germany users encountering their blanket residential IPv6.

Note that the Roon Labs team is actively researching additional methods of accessing ARC outside the home that will strike a balance between security, required infrastructure for both users and Roon, and the existing service provider landscape. We recognize that carrier-grade address translation in certain forms will require users to take extra steps to enable mobile playback. With certain carriers, ARC won’t function at all in its initial implementation. Vodafone Germany’s blanket IPv6 implementation and particular dual-stack lite is an example of one of these. It’s a frustrating situation and a compromise some users had to stoicly endure for the initial release, although our goal remains for ARC to be an out-of-the-box feature despite the wild diversity of networking conditions among our user base. We’ll get there; we’re just not there yet.

Please see the thread @Ian_MH linked above for the most up-to-date list of solutions and workarounds for circumnavigating the dual-stack lite implementation on Vodafone residential-tier accounts: Vodafone Germany w/ ISP-Supplied Modem/Router (Fritz!Box or Touchstone): 502/504 Errors - #56 by connor

Thanks for your reply.
This is not a solution for me, because I use a mobile (cell phone network) 5G router.

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