Package: iperf3 Version: 3.1.3-1 The -b option doesn't work anymore since I upgraded from Jessie to Stretch. Even if -b option is given, iperf3 sends as much traffic as possible.
With iperf (2.0.9+dfsg1-1) the -b option works on the same machine. System information: # uname -a Linux hostname 4.7.0-1-amd64 #1 SMP Debian 4.7.5-1 (2016-09-26) x86_64 GNU/Linux # dpkg -s libc6 | grep ^Version Version: 2.24-3