Etcd keeps crashing

I am running rancher2 preview on rancheros VMs and while the cluster is coming up, the etcd container keeps crashing with this message on the UI

[etcd] Failed to bring up Etcd Plane: Can't stop Docker container [etcd] for host []: error during connect: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.24/containers/etcd/stop: tunnel disconnect

Any idea if this is a bug or am I doing something incorrect?

I’ve seen this when I was running tests and I capped the network bandwidth to 100k up an down. How is the network between the host running rancher/server and rancher/agent ?

Actually all vm’s are running on the same box over tap interface and the vm’s os is rancheros.
When I looked in the vm running etcd I see it does get stopped by rancher/serverduring provisioning step but doesn’t start again. I did manual restarts of etcd but the provisioning repeats and then etcd stops again with the message I mentioned in the UI.

With exact same setup, and the rancher/server:stable, the cluster comes up fine!
So it is certainly not the environment issue for sure.