Can I proxy by PPPoE service name?

[Zach T Hall]

It seems that the features says it can be done, but I have no idea how.  
Basically I'm just wondering if I can take the service-name of the PPPoE 
server and have freeradius proxy out depending on which service name.   
Does anybody have any suggestions on where I might start looking for 
information on doing this type of thing?

Thanks,

Zach Hall