Last week I have released tunir 0.8. In this release I have fixed few bugs related to better logging. But most of the work was wnet on vagrant support. We now support both Virtualbox, and libvirt based vagrant images. There is a new key in the job.json file called provider, if you give the value virtualbox, then tunir will use vagrant along with Virtualbox, otherwise it will try to use vagrant-libvirt provider (which is default for our usage). There is separate page in the docs which explains the configurations.