and tried all the different configurations, also in the Router and they show the same port 55002, but unfortunately to no avail. I have turned of VPN, turned off Apple Private Relay and briefly reduced the “security" on the router to see if that would help, but still not working…
Any help or suggestions would be highly appreciated :-)
Best regards,
Staale
Describe your network setup
Apple Mac Studio M2 Ultra, 192 GB w/macOS 15.3 Router: Swisscom Internet-Box 3 & Internet-Booster 5G Speed: Download +/- 400 G/s & Upload +/- 100 G/s Switch: Cisco PoE Switch CBS110-16PP-EU 16 Port Roon: 2.0 (build 1496)
I believe that is what you can see in the 1/2 half of the screen-shot. If not, I’m not sure what you are referring to? Thank you for your willingness to help out.
Thank you. I indeed have 2 routers, but I did have that before as well. But I will have a look at your problem solving suggestions. Somehow I wonder if the Apple Private relay could be the culprit, but I have also tried with that turned off… Anyway, thank you very much and will report back on my “findings”.
My understanding is that this can cause issues with the reliability of ARC.
However, I believe the issues are not to do with the ability to make a connection. They certainly don’t result in the ‘Not Ready’ status on the Roon ARC settings page of the normal Roon Client. They are more to do with the Roon Server not recognizing the ARC device as the one previously connected resulting in the need to re-login and the consequent loss of all ARC downloaded content.
Edit: I have just realised that you may be referring to a setting on your Mac Roon Server. I don’t know - because I don’t use Macs - but it is quite possible that this setting on the Roon Server machine could cause issues with port forwarding.
Hi Noris, I tried this (though I normally use LAN), but it did not work with WiFi either, nor with “Fixed” or “Off”. I mentioned earlier, that I have a suspicion, that the Apple “Privat Relay” may have something to do with it, although the Roon ARC does not work with the “Private Relay” on or off, but I have had some problems with other services, because of this.
Thank you for your post. Unfortunately, the blockage in this case is at the level of your provider, SwissCom, who has implemented carrier-grade network address translation (CG-NAT) across their accounts.
This means port forwarding is an impossibility without requesting a dedicated IPv4 address from SwissCom.
Fortunately, Tailscale offers a reliable workaround for Roon users in this situation. You can download the free Tailscale app to your Mac RoonServer machine and to your phone, and it will automatically traverse the CG-NAT layer imposed by SwissCom to allow for ARC to connect remotely.
Please see here for specific instructions and let us know if we can help further:
If you’re finding Tailscale difficult to configure, you can also reach out directly to SwissCom to request a dedicated IP address. I recommend informing them that you’re attempting to use port forwarding but are blocked by CG-NAT; they’ll likely be familiar with the situation.