For Windows users, I believe this release took care of some of the networking issues when using the host adapter. I uninstalled VirtualBox and then re-installed 4.3.4. Virtual machines need to be stopped. When I used vagrant up. I had some issues with the driver. …but I also had to make sure that the virtual machines were not in a saved state or the driver won’t be installed and therefore the virtual machine will not be brought up.
I also confirmed that the Guest Additions do not need to be updated. Yeah!