rate-limit could create simple queue in the pppoe client instead of the server?

Hi.
I have found a lot of users infected as zombies that use the udp upload when partecipate to an attack.
This could saturate my last mile wireless line.
When this traffic reaches the pppoe server is it limited outside by the simple queue dynamically created by radius rate-limit parameter.
My question is: does exists some mechanism that could create this simple queue to pppoe client instead in the server?
(in this case queue list of servers could be also drastically off-loaded)

Thanks
Rodolfo

This could be a solution?
In the on-up pppoe script I query a webserver to obtain the simple queue script sq.auto.rtsc with the limits for the user profile?

Thanks

R.