vagrant up 错误信息：

MacBook-Pro:mantl wangwei$ vagrant up --provider virtualbox

No vagrant-config.yml found, using defaults

Bringing machine ‘worker-001‘ up with ‘virtualbox‘ provider...

Bringing machine ‘kubeworker-001‘ up with ‘virtualbox‘ provider...

Bringing machine ‘edge-001‘ up with ‘virtualbox‘ provider...

Bringing machine ‘control-01‘ up with ‘virtualbox‘ provider...

==> worker-001: Box ‘CiscoCloud/mantl‘ could not be found. Attempting to find and install...

    worker-001: Box Provider: virtualbox

    worker-001: Box Version: >= 0

The box ‘CiscoCloud/mantl‘ could not be found or

could not be accessed in the remote catalog. If this is a private

box on HashiCorp‘s Atlas, please verify you‘re logged in via

`vagrant login`. Also, please double-check the name. The expanded

URL and error message are shown below:

URL: ["https://atlas.hashicorp.com/CiscoCloud/mantl"]

Error: 

解决办法：

sudo rm /opt/vagrant/embedded/bin/curl

删除vagrant/embedded/bin/curl

Vagrant 1.8.7 不能下载box的bug