iperf -c 192.168.2.100 -d
WARNING: option -d is not valid in single threaded versions
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Client connecting to 192.168.2.100, TCP port 5001
TCP window size: 22.5 KByte (default)
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[  3] local 192.168.2.99 port 47881 connected with 192.168.2.100 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec  53.4 MBytes  44.7 Mbits/sec
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Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
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[  4] local 192.168.2.99 port 5001 connected with 192.168.2.100 port 55566
[  4]  0.0-10.0 sec   110 MBytes  91.9 Mbits/sec