Arc (android or ios) detects the server, but cannot connect. Docker in a standard trixie proxmox vm (no fw, selinux etc.). The server works, Arc works with standard roon in a lxc. services: roonserver: image: ghcr.io/roonlabs/roonserver:latest container_name: roonserver network_mode: …

What does the Roon Arc setting page show?

Select the only active server, the whorl, “Can’t connect…” Don’t get to the setup page. This is on the local network. Tailscale is installed on the docker host, so the container should be reachable through tailscale. Otherwise don’t see a difference to my other lxc instance, especially in terms o…

Hi, @Nickpi , thank you for the report. I moved this conversation to a different topic so that we can investigate this deeper. Could you please share a zip archive with logs from this RoonServer instance? You can upload the archive here Thanks! – Ivan

ok, the RoonServer_log and the docker log

[image] Nickpi: Select the only active server, If you have two instances of Roon server running on the same machine, i.e., using the same IP address, ARC will not work with one server since ARC on Android is setup to communicate with the LXC version on your public IP address.

Doesn’t matter. You’ll need to reinstall ARC for it to work with the Docker container.

@Nickpi , thank you for uploading the log files. One more question, could you please share what you see in Roon ARC? Thanks! – Ivan

@Nickpi - I suspect this is a configuration, caching, or networking issue - not a fundamental issue with the container image. [image] mjw: If you have two instances of Roon server running on the same machine, i.e., using the same IP address, ARC will not work with one server since ARC on Androi…

[image] gTunes: There’s not networking issue that would prevent two instances on the same machine from working as long as they’re on different ports. But Roon maintains a cloud mapping and I don’t know enough about that mapping to know if it only supports a single instance on the LAN on a given …

RoonServer Docker Image: Roon ARC cannot connect to RoonServer

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Suedkiez (Just a fellow user like you) April 14, 2026, 5:07pm 14

Yes it is. This is annoying and support explicitly said that they are working on this.

Just the very latest example:

Or this (there are many others)