If you ever encounter this error:

```bash
Vagrant attempted to execute the capability 'configure_networks'
on the detect guest OS 'linux', but the guest doesn't
support that capability. This capability is required for your
configuration of Vagrant. Please either reconfigure Vagrant to
avoid this capability or fix the issue by creating the capability.
```

Create a file `/etc/os-release`

```bash
NAME="Ubuntu"
VERSION="12.04 LTS, Precise Pangolin"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu precise (12.04 LTS)"
VERSION_ID="12.04"
```

Then run

```bash
vagrant reload
```