FreeRADIUS/mod_auth_radius — pull request #1 by mcnewton (2012-09-27 20:24:17+00:00)
Title: mod_auth_radius add calling-station-id = client ip to radius request

A small patch to allow the RADIUS server to find out the Apache client's IP address when authenticating. Been using this for a while and it works well for blocking unauthorised client IPs.