Henk, thank you, this is helpful. I agree with @Rugby’s question to ask Ziggo if they use CGNAT because your ARC error message is not quite the same as a double-NAT error message.
If CGNAT is used within Ziggo’s network, then one option is to request a static IP address for your public IP address. If CGNAT is not used by Ziggo, can your Ziggo router be configured for port forwarding?
Hi Joost. I use my own Orbi router, but now I found out that when I change the wi-fi to the Ziggo box the Roon Arc connects correctly. So, I have to get in touch with Ziggo (for now when I’m out of the house I just change to the Ziggo wi-fi to use Roon Arc.)
Ziggo (Internet & TV, using the wi-fi router on their modem)
KPN NL (My phone/mobile internet provider)
Connected Audio Devices
iPhone SE (2020 model, 64 gb storage)
Terratec Aureon 7.1 USB sound card connected to a set of Presonus Eris 4.5 BT monitor speakers.
Number of Tracks in Library
Description of Issue
I have the same issue. At home on wi-fi ARC runs perfectly fine. But if I turn off wi-fi and my iPhone uses my 4g connection nothing would play and often getting the “poor connection” message. Which is odd because all other apps that I’m using have 0 problems with my 4g connection. This includes Qobuz, Apple Music, VOX, HBO Max and Amazon Prime. Even streaming full hd doesn’t result in stutters.
I’ve tried ARC as well in my car and at work, but resulting in the same issue. On top of the app you see a progress bar that keeps spinning without end, and then the “poor connection” message will show up, or not at all.
I’ve merged your thread for visibility with another user with the same ISP-supplied modem from Ziggo.
First off, are there any diagnostics displayed in the ARC Settings tab in Roon? It’s likely that you’re encountering a double-layer of NAT that is preventing the port forwarding from automatically configuring. Please post any diagnostics visible (make sure to censor IP addresses for security) and the team will be best equipped to support you.
A couple other questions that will help us determine the source of the block:
Do you have a second router in your setup?
If you don’t have a second router in your setup, then it’s possible you are bumping up against Ziggo’s dynamic IP address assignment, or an issue with assignment in your router. You can verify that your router is set to IPv4, and not IPv6, just for due diligence.
I suggest you reach out to Ziggo’s support team to inquire if Ziggo can provide your account with a static IPv4 address if nothing works.
I wanted to reach out, as it’s been some time since I last checked in on the issue you were experiencing. The team investigated routine diagnostics from your account, and it would appear that ARC has been able to successfully connect in what would appear to be mobile playback conditions (4G/5G). Have you been able to successfully contact your ISP to bypass their carrier-grade NAT on your account?
Well I finally have my setup working with ARC. And I didn’t have to get Ziggo to put the Ziggo Mediabox into bridge mode. So it still has its DHCP, NAT, WIFI and firewall enabled. The only thing I disabled on both the Ziggo box and my ASUS router is UPnP.