following readme
.. https://github.com/coreos/coreos-vagrant/blob/master/README.md
⇒ vagrant up
Bringing machine 'core-01' up with 'virtualbox' provider...
==> core-01: Box 'coreos-stable' could not be found. Attempting to find and
install...
core-01: Box Provider: virtualbox
core-01: Box Version: >= 0
==> core-01: Box file was not detected as metadata. Adding it directly...
==> core-01: Adding box 'coreos-stable' (v0) for provider: virtualbox
core-01: Downloading:
https://storage.googleapis.com/stable.release.core-os.net/amd64-usr/current/coreos_production_vagrant.json
An error occurred while downloading the remote file. The error
message, if any, is reproduced below. Please fix this error and try
again.
it appears that the current path is not resolving
so I attempt to modify $image_version in the config to a version which does
exist.
⇒ vagrant up
Bringing machine 'core-01' up with 'virtualbox' provider...
==> core-01: Box 'coreos-stable' could not be found. Attempting to find and
install...
core-01: Box Provider: virtualbox
core-01: Box Version: 1068.10.0
==> core-01: Box file was not detected as metadata. Adding it directly...
You specified a box version constraint with a direct box file
path. Box version constraints only work with boxes from Vagrant
Cloud or a custom box host. Please remove the version constraint
and try again.