Get vagrant running on archlinux

arch_vagrant

# The provider 'virtualbox' that was requested to back the machine
# 'default' is reporting that it isn't usable on this system. The
# reason is shown below:

# VirtualBox is complaining that the kernel module is not loaded. Please
# run `VBoxManage --version` or open the VirtualBox GUI to see the error
# message which should contain instructions on how to fix this error.
sudo /sbin/vboxconfig 

# 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
sudo vboxreload