From: Lawrence Brakmo <bra...@fb.com> Date: Tue, 7 Jun 2016 01:04:06 +0000
> The reason why this may be necessary, is that under some conditions > NV flows competing with more aggressive flows will perform > poorly. People may be more willing to test NV if there is a quick > and simple way to revert if necessary (without having to restart the > flows). This is a property that may apply to any congestion control algorithm whatsoever, not just NV.