>IEEE 802.11f was a Recommended Practice (not a Standard) issued by >IEEE Standards Association, 802.11 group.
>I know it was deprecated due to reading minutes of recent meetings, >accessible to participants.

>They are the ones that maintain it's status. They have websites, but none >dedicated to it in particular.
> http://standards.ieee.org/
>http://grouper.ieee.org/groups/802/11/

Thank you very much! In fact, I have many question about this protocol.
But I know further discussion don't  belongs to  this list. if no radius server can support IAPP, I will give up the development of the IAPP. 
                                                                             Best regards
                                                                            WoodLand