_PLEASE NOTE the following text from the iperf3 license.  Submitting a

pull request to the iperf3 repository constitutes "[making]

Enhancements available...publicly":_

```

You are under no obligation whatsoever to provide any bug fixes, patches, or

upgrades to the features, functionality or performance of the source code

("Enhancements") to anyone; however, if you choose to make your Enhancements

available either publicly, or directly to Lawrence Berkeley National

Laboratory, without imposing a separate written license agreement for such

Enhancements, then you hereby grant the following license: a non-exclusive,

royalty-free perpetual license to install, use, modify, prepare derivative

works, incorporate into other computer software, distribute, and sublicense

such enhancements or derivative works thereof, in binary and source code form.

```

_The complete iperf3 license is available in the `LICENSE` file in the

top directory of the iperf3 source tree._

* Version of iperf3 (or development branch, such as `master` or

  `3.1-STABLE`) to which this pull request applies:

* Issues fixed (if any):

* Brief description of code changes (suitable for use as a commit message):