Hi,
Now that CentOS 7.3 has been released, vagrant boxes have become broken when the vagrant-vbguest plugin is used to build guest additions at creation time due to the "kernel-devel" package matching the running kernel not being available in the default repos anymore (since the base repo is not cumulative with older point releases).
Of course, once there's an official CentOS 7.3 base box available, the problem should fix itself, but a somewhat important usecase remains broken and it's why I'm posting this:
Using vagrant is especially useful when you want reproducible environments, and this includes pinning the base box to a particular version. As it stands, new CentOS point releases permanently break this usecase and I believe it would be important to have a solution for this.
Best regards,
-- Carlos Rodrigues