I used copying files to identify the problem. What would be the benefit of using iperf in this case?
The MTU is set correctly end to end, 1600 as per documentation. Wouldn't I get dropped packets, when the MTU is not set correctly somewhere along the way, sicne Geneve frames cannot be fragmented?
Also it does not seem to be an issue with the networking hardware, since the problem occurs even the source and target system are placed on the same ESXi host. Packets would not leave the host in this case.
