Hi

This is my first patch, it's really straight-forward.
But I'm not quite sure about the naming because there's iperf, iperf2
and iperf3 which are different projects. The original iperf is
abandoned and iperf2 is backwards compatible and still gets bug fixes
and iperf3, which this patch is for, is in active development and adds a
lot of new features but also lacks some of the options of previous
versions. Thus it's often referred to as iperf3, which is also the name
of the binary, so I'm not sure wheter the package should better be
called iperf3 or iperf.

Thanks for your feedback

Benz