ARC not ready message when using Tailscale (ref#Y9YI7Y)

Support
1

Network Setup

· I use a single personal router not provided by my ISP

ARC Status

· ARC is *Not Ready*

Roon Error Code

· “natpmp_autoconfig”: {“status”:“NotFound”}, “upnp_autoconfig”: {“status”:“NotFound”} }

Have you successfully located and enabled the UPnP or NAT-PMP settings in your router's web UI?

· I've turned UPnP/ NAT-PMP on and ARC won't connect

Select the Diagnostic Keyword or Text String

· Something else

Don't give up yet.

· I'm stuck. I'd like to create a post to ask Roon Community for help.

Describe the issue

I'm using Tailscale but I get the ARC not ready message

Describe your network setup

ISP: Origin, Modem: tp-link (Archer BE800) Roon server: Mac Mini O/S: Tahoe

Diagnostics: {
"ipv4_connectivity": {"status":"NetworkError","status_code":504,"error":"error code: 504"},
"external_ip": {"actual_external_ip":"103.aaa.bbb.ccc","actual_external_ipv6":"null","router_external_ip":"null"},
"natpmp_autoconfig": {"status":"NotFound"},
"upnp_autoconfig": {"status":"NotFound"},
"multinat_autoconfig": {"status":"Failed","error":"Unknown Error code"}
}

2

When using Tailscale, the 'Not Ready’status and the diagnostic text can be ignored because they pertain to a port forwarding setup and Tailscale removes the need to set up port forwarding.

If ARC works with Tailscale when away from home ( or at least with your phone/tablet connected by cellular instead of WiFi), then all is good and there is nothing more to do.

3

Thanks Wade, it’s taking forever to sync now.

I have what’s considered a large library (757488 tracks) Hopefully syncing with complete eventually.

I’ve tried to get ARC working several times over the last couple of years. I end up giving up using Tidal or Spotify away from home.

giving it another go :slight_smile:

4

You should do the first sync while on home wifi, and this is independent of port forwarding AND Tailscale both.

There may be a possible improvement in the latest Early Access build:

1 Like
5

Hello @Paul_Elliott,

It looks like our community members have already jumped in and pointed you in the right direction!

I just wanted to check in quickly: were you able to successfully complete the initial ARC sync while connected to your home Wi-Fi, and is Tailscale working for you outside the house now?

Please let us know if everything is sorted out, or if you still need a hand getting this running!

6

I also have problems with Roon ARC. Is it OK to post my specific problems here or should I open a new thread?
I have an always On Roon ROCK (on an Intel_NUC8i5BEH, ca. 30000 tracks) where I have installed Tailscale. I have also installed Tailscale and ARC on my iPhone 15.
To test I have turned Off WiFi on my phone and ARC reports “There’s an issue with your Roon Server”.
Roon app on my PC shows (Settings - ARC): “Not ready”. PC is connected to ROCK via Ethernet cable and can of course play w/o problems. Noticed that port no. is not important when using Tailscale (still tried to set it to 0 but no effect).
Tailscale.com reports “Done! Your devices can now connect from anywhere” and shows a green dot for both iphone-15 and rock

Hope someone can help

7

Hi Vadim, Unfortunately no to all your questions. Love to get ARC working.

Cheers

8

Hi @Paul_Elliott,

This library size is unfortunately still very far outside of the bounds of what our QA team is able to test for normal Roon and Arc functionality.

As @Suedkiez has mentioned, there might be recent updates/optimizations that may help you over in early access, but we’re still not able to confirm anything due to the size of your library. These optimizations will make their way over to Production with the next Roon update, so please let us know how things go once this happens.

Thanks for your understanding here, Paul! :folded_hands:

9

Thanks, i look forward to the update to see if that helps

10

Hi @Paul_Elliott,

Have you had a chance to enroll in the Early Access build to see if the issue improves?

Also, when you’re on your home network with Tailscale turned off, does your device eventually complete the sync, or does it hang indefinitely?

Thanks for your help in sorting this out.

11

Hi Alex,

No I decided to wait until the general update.

Any idea when that’ll be?

Best regards

Paul

12

Hi @Paul_Elliott,

We’re not able to comment on any specific timelines quite yet, but the next update will provide all the information via our software release notes here:

14

Hi @Paul_Elliott,

The team will be releasing work to reduce confusion in the UI between Tailscale and port forwarding. Long-term, we’re stabilizing connectivity continually with ARC.

That said, as @benjamin said, ARC still won’t sync reliably when your Roon library contains several hundred thousand tracks. This was our conclusion when you reported sync problems with ARC in 2024 here: "Unable to Use Arc" (ref#2PE2WO) - #15

You’ll find that the app sometimes syncs reliably on WiFi and cellular data (Tailscale), but there will be performance issues intermittently that plague the ARC experience. This is because the sheer number of objects tickles data transfer limits imposed by Apple/Google and operating systems when there is that much ancillary metadata involved. We continue to expand the limits, but over 500,000 tracks is beyond what we can promise will function reliably (for now).

Thank you!