iperf3 -c ping.online.net -R -p 5202
Connecting to host ping.online.net, port 5202
Reverse mode, remote host ping.online.net is sending
[  4] local 62.210.129.235 port 32956 connected to 62.210.18.40 port 5202
[ ID] Interval           Transfer     Bandwidth
[  4]   0.00-1.00   sec   111 MBytes   933 Mbits/sec
[  4]   1.00-2.00   sec   110 MBytes   925 Mbits/sec
[  4]   2.00-3.00   sec   109 MBytes   913 Mbits/sec
[  4]   3.00-4.00   sec   112 MBytes   938 Mbits/sec
[  4]   4.00-5.00   sec   112 MBytes   942 Mbits/sec
[  4]   5.00-6.00   sec   110 MBytes   925 Mbits/sec
[  4]   6.00-7.00   sec   111 MBytes   932 Mbits/sec
[  4]   7.00-8.00   sec   112 MBytes   938 Mbits/sec
[  4]   8.00-9.00   sec   112 MBytes   940 Mbits/sec
[  4]   9.00-10.00  sec   112 MBytes   939 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  1.09 GBytes   933 Mbits/sec  145             sender
[  4]   0.00-10.00  sec  1.09 GBytes   933 Mbits/sec                  receiver

iperf Done.