Sorry, my fault..
I just take a look at ChilliSpot radius.h, and there's code about coa.
Thank you!

2012/10/9 Fajar A. Nugraha <list@fajar.net>
On Tue, Oct 9, 2012 at 7:21 AM, ¼B§g¬ý <trantor.liu@gmail.com> wrote:
> I am using Chillispot on my NAS. But it doesn't seem to support CoA.

Really? How did you determine that?

> Can you
> suggest other AP controllers?

http://lmgtfy.com/?q=chillispot%20coa%20disconnect

See top result

--
Fajar
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