Comment 13 for bug 1593752

Workaround for the issue: In Fuel UI, on all controllers, on physical interface that has "Public" role network switch "tcp-segmentation-offload" mode into "disabled" state (tx-tcp-segmentation, tx-tcp-ecn-segmentation, tx-tcp6-segmentation should be disabled automatically too).

With the workaround north-south traffic is ok:

TCP egress
==========
    bandwidth:
      avg: 5413.628151702881
      max: 7189.483642578125
      min: 3609.7335815429688
      unit: Mbit/s

TCP ingress
===========
    bandwidth:
      avg: 5608.663052622477
      max: 5799.884796142578
      min: 5383.405685424805
      unit: Mbit/s