RADIUS Authentication driver for Kohana 3.3

Lately I was in need for an authentication driver that supports RADIUS servers. Happily the Kohana Auth module supports easy development of custom authentication drivers by extending the Auth class holding abstract specifications of the required methods. I implemented these methods making use of the PHP Radius extension (which therefore is required). The driver is publicly available at GitHub.

I am planning on implementing a pure PHP Radius client to get rid of the requirement of the PHP Radius extension.