CentOS 6.6 x86_64
Use Packer to build the base image, tested with v0.6.1
Provisioned with Vagrant 1.6.3
Clone with the following command
git clone --recursive git@github.com:erumble/vagrant-centos.git
Navigate to the packer-templates subdirectory and issue the following command to build the base image
packer build centos-6.6-x86_64.json