mitchellh/vagrant — pull request #4707 by mitchellh (2014-10-24 17:37:58+00:00)
Title: Generate Random SSH key on `vagrant up`

This PR makes it so that on `vagrant up`, Vagrant will randomly generate a keypair and use that if the insecure keypair is detected. This adds an extra level of security when doing things such as bridge networking.

Fixes GH-2608