root@ubuntu:~# ip netns exec vpp1 iperf3 -p 5201 -c us.cooperlees.com
Connecting to host us.cooperlees.com, port 5201
[  4] local 10.6.9.2 port 40466 connected to 173.255.255.199 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec  18.3 MBytes   153 Mbits/sec    0   2.31 MBytes
[  4]   1.00-2.00   sec  26.3 MBytes   221 Mbits/sec    0   3.01 MBytes
[  4]   2.00-3.00   sec  28.8 MBytes   241 Mbits/sec    0   3.01 MBytes
[  4]   3.00-4.00   sec  27.8 MBytes   233 Mbits/sec    0   3.01 MBytes
[  4]   4.00-5.00   sec  29.1 MBytes   244 Mbits/sec    0   3.01 MBytes
[  4]   5.00-6.00   sec  32.1 MBytes   269 Mbits/sec    0   3.01 MBytes
[  4]   6.00-7.00   sec  33.0 MBytes   277 Mbits/sec    0   3.01 MBytes
[  4]   7.00-8.00   sec  30.5 MBytes   256 Mbits/sec    0   3.01 MBytes
[  4]   8.00-9.00   sec  30.2 MBytes   253 Mbits/sec    0   3.01 MBytes
[  4]   9.00-10.00  sec  31.1 MBytes   261 Mbits/sec    0   3.01 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec   287 MBytes   241 Mbits/sec    0             sender
[  4]   0.00-10.00  sec   286 MBytes   240 Mbits/sec                  receiver

iperf Done.
root@ubuntu:~#