there is more topic with this problem http://forum.mikrotik.com/t/bursting-with-wireless-radius-auth-and-mikrotik-rate-limit/65860/1 , http://forum.mikrotik.com/t/daloradius-hotspot-wireless-burst-not-work/61678/1
now is version 6.4 and it still not working , why the hell you fix this problem or tell as something about that? 