iperf3 server does not honour the bind command for sending data - sends from incorrect interface

[peterm888]

on a server with dual NIC, when running in server mode and using bind (-B) sets the interface (10Gb/s in my case) for listening, but transmission (e.g. using client -R) does not honour the bind setting, so data comes from the other NIC (1Gb/s in my case).

iperf 3.7 (cJSON 1.5.2)

[davidBar-On]

Several issues related to bind were resolved since version 3.7 (which is quite old). Suggest to use a newer version - latest version is 3.21. Note that current iperf3 includes both --bind and --bind-dev options.

[peterm888]

Thanks, seems the distro repository on that server (which is admittedly old) is way behind the times!