Quick query about how my results will be effected by Riverbed WAN optimisation devices.

These devices basically de-duplicate data at the bit / byte level. If a file has been seen before, it'll copy from the local riverbed device to the client (rather than from the WAN to the client).

So does LanSpeedTest send a unique data stream every time? If so then the Riverbeds won't be able to optimize that data stream (which is what I want) therefore enabling me to get a good, un-optimized wan speed measure.