netflow per connection

[Igor Smitran]

>> Is there a way to have netflow data per session, instead of just total
>> "octets in" and total "octets out"? I am trying to find a relatively easy
>> way to charge users per netflow data, for example: local data is 50%
>> discount, mail is 30% discount etc.
>
>  Consult the NAS documentation.  If it doesn't say it can send that
> information, then that information won't be available to FreeRADIUS.
>
>  Alan DeKok.

I have Mikrotik. It can export netflow data but i am not sure what 
freeradius can do with that? Is it possible to have all netflow for that 
client inserted into database somehow? Please provide some URL because i am 
not sure what to search for.

Igor