Comment 6 for bug 1574969

For the vagrant-lxc issue, you can apply the workaround from here:

https://github.com/fgrehm/vagrant-lxc/issues/407

Specifically, define the backingstore manually in your Vagrantfile:

```
config.vm.provider :lxc do |lxc,ovrd|
    ovrd.vm.box = 'fgrehm/trusty64-lxc'
    lxc.backingstore = 'dir'
end
```