On Wed, Feb 19, 2020 at 02:06:28AM +0000, Mark Zhang wrote: > The symmetry is important when calculate flow_label with DstQPn/SrcQPn > for non-RDMA CM Service ID (check the first mail), so that the server > and client will have same flow_label and udp_sport. But looks like it is > not important in this case. If the application needs a certain flow label it should not rely on auto-generation, IMHO. I expect most networks will not be reversible anyhow, even with the same flow label? Jason