Mac OS Vagrant interfaces failure

If You see this:

....
There was an error while executing `VBoxManage`, a CLI used by Vagrant
for controlling VirtualBox. The command and stderr is shown below.

Command: ["hostonlyif", "create"]

Stderr: 0%...
Progress state: NS_ERROR_FAILURE
VBoxManage: error: Failed to create the host-only adapter

Just do this:

$ sudo /Library/StartupItems/VirtualBox/VirtualBox restart

It will re-create virtual adapters for VB installation.