Zerotier stopped working linux,windows,mac

This previously worked one linux server at digital ocean, then a network behind gl-inet nat router with 2 raspberry pi, 1 macos, 1 windows11. When working all could SSH to each other ok.

Now all show online on the zerotier page. But none can ssh or ping to any zerotier. On each node I left the network and rejoined.
I checked all the firewalls. They all look ok and nothing has changed with the firewalls.

Any hints on what to do next to fix it?

I am also encountering the same issue since one week. I was able to connect to zerotier using my mobile network until last week but now I am unable to connect to my device which is located in austin using zerotier. Please have a look at this.

Any hints on how to fix this issue and why it is occured?

Yes I just got it working. I believe it worked with the router that comes with starlink. I replaced the starlink router with a gl-inet opal. I believe that is when zerotier stopped working.

For greater distance and better IPV6 I replaced the gl-inet opal with a gl-inet flint 2. Zerotier still did not work. I noticed that the flint 2 had a control panels switch to enable zerotier in the router. I tried that thinking it might block zerotier if off. With it on in the flint2 and the router registered as a zerotier node I could ssh to the flint2. But none of the other nodes could connect to each other.

Then I added a route to the private net behind the zerotier (not the zero tier net), I mean the private net like 10.x.x.x or 168.x.x.x then it started working.

So in my case all the nodes but one were behind a router on a private net. Try adding a route in zerotier to the private net giving access via the zerotier address of the private net router.

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