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Problem with docker swarm from Tutorial Get Started, Part 4: Swarms, Hyper-V nodes don't see each other

Has anyone had this problem before? I cannot get Hyper-V nodes to talk to each other. This error comes up when running

docker-machine create -d hyperv --hyperv-virtual-switch “myswitch” myvm1

This machine has been allocated an IP address, but Docker Machine could not
reach it successfully.

SSH for the machine should still work, but connecting to exposed ports, such as
the Docker daemon port (usually :2376), may not work properly.

You may need to add the route manually, or use another related workaround.

This could be due to a VPN, proxy, or host file configuration issue.