[Chilli] MacAuth failing after wireless drop

Timothy nzkbuk at gmail.com
Wed Apr 28 17:33:55 UTC 2010

On 28/04/2010 15:12, Jason Allen wrote:
> On 28 April 2010 23:41, David Bird <david at coova.com 
> <mailto:david at coova.com>> wrote:
>     Because the DHCP lease is still leased out.
> And thus, shouldn't macauth also operate when dhcp reallocation occurs 
> (in the case of a dropped and re-established) wireless, not just when 
> the allocation or renewal occurs?

 From my experiance a DHCP lease is renewed 1/2 way through the lease. 
So if you have a 60 min lease then it would be renewed every 30 mins.
I'm not sure of the exact state machine of most devices but I do know 
from logs that most laptop's try to renew an existing (or previous) ip 
address. I don't know what embedded devices (such as iphones etc) do.

What is the network topoligy, is coova-chilli running on an access point 
(such as with openwrt) or have you got a server with 1 or more AP's / 
devices connected via a switch?

As for re-authing a session if that would be implemented I know I would 
prefer it to be a configurable option (or at worse a compile time 
option). Having EVERY DHCP request turn into a radius request could 
cause a significant volume of traffic.

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