AP and remote IP

[Gabriele Cardosi]

Hi All,
I am a complete noob about radius - and freeradius, so please forgive if 
the question is silly.
For a project I would like to develop, I would need to be able to 
retrieve the ip of a device  wireless-connected to an access point that 
use freeradius for "authentication".
I created a testing user and set up the client "secret", and I am able 
to connect the device (a mobile phone) to the access point 
authenticating it with the freeradius, but in the log what I see is the 
client's (i.e. the access point) IP, the clients (AP) mac, and the 
device mac. Is it possible to have the device ip sent (and stored) 
somehow to the freeradius? I read something about ip pool, but I have 
the impression that it can't be used in this setting.

Thanks
Gabriele