there's so much math in this that I cannot make heads or tails of it. https://www.eee.hku.hk/~kcleung/papers/conferences/bufferbloat_multi-bottleneck:INFOCOM_2018/PID5170809.pdf -- Dave Täht CEO, TekLibre, LLC http://www.teklibre.com Tel: 1-669-226-2619