attributes handling

[kevin]

Hi Guys,

I want to get some idea about how to manipulate attributes before we 
respond to NAS.

For example, before I send Access-Accept packet to the NAS, I want to 
add two additional attributes (let's say S and T) to NAS-1 and add X, Y, 
and Z to NAS-2.  In short, I want to add some attributes differently 
based on the NAS IP or Client IP.  How can I do that?

Thanks,
Kevin