@Clive_A Router A and B are installed in two different physical locations, so I don't really have any way to bridge them directly together.

Here's the diagram:

  @Clive_A iperf3 results:

VPN client side initiating upload (client -> server):

```

$ iperf3 -c 172.18.2.1
Connecting to host 172.18.2.1, port 5201
[  5] local 172.19.2.1 port 43756 connected to 172.18.2.1 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   103 MBytes   865 Mbits/sec    0   3.05 MBytes
[  5]   1.00-2.00   sec   104 MBytes   874 Mbits/sec    7   1.53 MBytes
[  5]   2.00-3.00   sec   104 MBytes   873 Mbits/sec  505   1.14 MBytes
[  5]   3.00-4.00   sec   105 MBytes   883 Mbits/sec    0   1.22 MBytes
[  5]   4.00-5.00   sec   104 MBytes   871 Mbits/sec    0   1.28 MBytes
[  5]   5.00-6.00   sec   104 MBytes   874 Mbits/sec   31    950 KBytes
[  5]   6.00-7.00   sec   103 MBytes   865 Mbits/sec    0   1020 KBytes
[  5]   7.00-8.00   sec   105 MBytes   884 Mbits/sec    0   1.06 MBytes
[  5]   8.00-9.00   sec   105 MBytes   881 Mbits/sec    0   1.13 MBytes
[  5]   9.00-10.00  sec   105 MBytes   879 Mbits/sec    0   1.19 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  1.02 GBytes   875 Mbits/sec  543             sender
[  5]   0.00-10.01  sec  1.02 GBytes   872 Mbits/sec                  receiver

```

VPN client side initiating download (server -> client):

```

$ iperf3 -c 127.18.2.1 -R
Connecting to host 127.18.2.1, port 5201
Reverse mode, remote host 127.18.2.1 is sending
[  5] local 127.19.2.1 port 56322 connected to 127.18.2.1 port 5201
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  1.75 MBytes  14.7 Mbits/sec
[  5]   1.00-2.00   sec  1.50 MBytes  12.6 Mbits/sec
[  5]   2.00-3.00   sec  1.62 MBytes  13.6 Mbits/sec
[  5]   3.00-4.00   sec  1.50 MBytes  12.6 Mbits/sec
[  5]   4.00-5.00   sec  1.62 MBytes  13.6 Mbits/sec
[  5]   5.00-6.00   sec  1.62 MBytes  13.6 Mbits/sec
[  5]   6.00-7.00   sec  1.50 MBytes  12.6 Mbits/sec
[  5]   7.00-8.00   sec  1.50 MBytes  12.6 Mbits/sec
[  5]   8.00-9.00   sec  1.62 MBytes  13.6 Mbits/sec
[  5]   9.00-10.00  sec  1.50 MBytes  12.6 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.01  sec  15.9 MBytes  13.3 Mbits/sec  197             sender
[  5]   0.00-10.00  sec  15.8 MBytes  13.2 Mbits/sec                  receiver

```

VPN server side initiating upload (server -> client):

```

$ iperf3 -c 127.19.2.1
Connecting to host 127.19.2.1, port 5201
[  5] local 127.18.2.1 port 44076 connected to 127.19.2.1 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  1.62 MBytes  13.6 Mbits/sec   43   13.2 KBytes
[  5]   1.00-2.00   sec  1.50 MBytes  12.6 Mbits/sec   16   13.2 KBytes
[  5]   2.00-3.00   sec  1.50 MBytes  12.6 Mbits/sec   13   11.8 KBytes
[  5]   3.00-4.00   sec  1.50 MBytes  12.6 Mbits/sec   15   13.2 KBytes
[  5]   4.00-5.00   sec  1.62 MBytes  13.6 Mbits/sec   18   13.2 KBytes
[  5]   5.00-6.00   sec  1.50 MBytes  12.6 Mbits/sec   17   14.5 KBytes
[  5]   6.00-7.00   sec  1.50 MBytes  12.6 Mbits/sec   17   11.8 KBytes
[  5]   7.00-8.00   sec  1.50 MBytes  12.6 Mbits/sec   15   17.1 KBytes
[  5]   8.00-9.00   sec  1.75 MBytes  14.7 Mbits/sec   20   18.4 KBytes
[  5]   9.00-10.00  sec  1.50 MBytes  12.6 Mbits/sec   13   13.2 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  15.5 MBytes  13.0 Mbits/sec  187             sender
[  5]   0.00-10.01  sec  15.4 MBytes  12.9 Mbits/sec                  receiver

```

VPN server side initiating download (client -> server):

```

$ iperf3 -c 127.19.2.1 -R
Connecting to host 127.19.2.1, port 5201
Reverse mode, remote host 127.19.2.1 is sending
[  5] local 127.18.2.1 port 55110 connected to 127.19.2.1 port 5201
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  98.6 MBytes   826 Mbits/sec
[  5]   1.00-2.00   sec   103 MBytes   861 Mbits/sec
[  5]   2.00-3.00   sec   105 MBytes   880 Mbits/sec
[  5]   3.00-4.00   sec   105 MBytes   880 Mbits/sec
[  5]   4.00-5.00   sec  49.2 MBytes   413 Mbits/sec
[  5]   5.00-6.00   sec  48.4 MBytes   406 Mbits/sec
[  5]   6.00-7.00   sec  58.6 MBytes   492 Mbits/sec
[  5]   7.00-8.00   sec  68.9 MBytes   578 Mbits/sec
[  5]   8.00-9.00   sec  78.6 MBytes   660 Mbits/sec
[  5]   9.00-10.00  sec  87.9 MBytes   737 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.01  sec   806 MBytes   675 Mbits/sec  1285             sender
[  5]   0.00-10.00  sec   803 MBytes   673 Mbits/sec                  receiver

```

So, this confirms the same results: full expected speed from VPN client->server, 80% speed reduction VPN server -> client.

  @Clive_A I'm not sure what you mean by "Why is your IP address displayed as 127.?". I'm testing the speed between two servers on private 127.* subnets, connected by L2TP encrypted VPN.

iperf3 speed tests with your requested settings show the same results (~900Mbps Client -> Server, ~20-80 Mbps Server -> Client).

Server -> Client (download initiated from client)

```

$  iperf3 -c 127.18.2.1 -P 10 -l 1M -R
Connecting to host 127.18.2.1, port 5201
Reverse mode, remote host 127.18.2.1 is sending
[  5] local 127.19.2.1 port 39540 connected to 127.18.2.1 port 5201
[  7] local 127.19.2.1 port 39542 connected to 127.18.2.1 port 5201
[  9] local 127.19.2.1 port 39552 connected to 127.18.2.1 port 5201
[ 11] local 127.19.2.1 port 39566 connected to 127.18.2.1 port 5201
[ 13] local 127.19.2.1 port 39580 connected to 127.18.2.1 port 5201
[ 15] local 127.19.2.1 port 39594 connected to 127.18.2.1 port 5201
[ 17] local 127.19.2.1 port 39610 connected to 127.18.2.1 port 5201
[ 19] local 127.19.2.1 port 39626 connected to 127.18.2.1 port 5201
[ 21] local 127.19.2.1 port 39636 connected to 127.18.2.1 port 5201
[ 23] local 127.19.2.1 port 39648 connected to 127.18.2.1 port 5201
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  0.00 Bytes  0.00 bits/sec
[  7]   0.00-1.00   sec  0.00 Bytes  0.00 bits/sec
[  9]   0.00-1.00   sec  0.00 Bytes  0.00 bits/sec
[ 11]   0.00-1.00   sec  0.00 Bytes  0.00 bits/sec
[ 13]   0.00-1.00   sec  0.00 Bytes  0.00 bits/sec
[ 15]   0.00-1.00   sec  0.00 Bytes  0.00 bits/sec
[ 17]   0.00-1.00   sec  0.00 Bytes  0.00 bits/sec
[ 19]   0.00-1.00   sec  0.00 Bytes  0.00 bits/sec
[ 21]   0.00-1.00   sec  0.00 Bytes  0.00 bits/sec
[ 23]   0.00-1.00   sec  0.00 Bytes  0.00 bits/sec
[SUM]   0.00-1.00   sec  0.00 Bytes  0.00 bits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec
[  7]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec
[  9]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec
[ 11]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec
[ 13]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec
[ 15]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec
[ 17]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec
[ 19]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec
[ 21]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec
[ 23]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec
[SUM]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   2.00-3.00   sec  1.00 MBytes  8.39 Mbits/sec
[  7]   2.00-3.00   sec  1.00 MBytes  8.39 Mbits/sec
[  9]   2.00-3.00   sec  0.00 Bytes  0.00 bits/sec
[ 11]   2.00-3.00   sec  0.00 Bytes  0.00 bits/sec
[ 13]   2.00-3.00   sec  1.00 MBytes  8.39 Mbits/sec
[ 15]   2.00-3.00   sec  0.00 Bytes  0.00 bits/sec
[ 17]   2.00-3.00   sec  0.00 Bytes  0.00 bits/sec
[ 19]   2.00-3.00   sec  0.00 Bytes  0.00 bits/sec
[ 21]   2.00-3.00   sec  0.00 Bytes  0.00 bits/sec
[ 23]   2.00-3.00   sec  0.00 Bytes  0.00 bits/sec
[SUM]   2.00-3.00   sec  3.00 MBytes  25.2 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   3.00-4.00   sec  0.00 Bytes  0.00 bits/sec
[  7]   3.00-4.00   sec  0.00 Bytes  0.00 bits/sec
[  9]   3.00-4.00   sec  1.00 MBytes  8.39 Mbits/sec
[ 11]   3.00-4.00   sec  1.00 MBytes  8.39 Mbits/sec
[ 13]   3.00-4.00   sec  0.00 Bytes  0.00 bits/sec
[ 15]   3.00-4.00   sec  1.00 MBytes  8.39 Mbits/sec
[ 17]   3.00-4.00   sec  1.00 MBytes  8.39 Mbits/sec
[ 19]   3.00-4.00   sec  1.00 MBytes  8.39 Mbits/sec
[ 21]   3.00-4.00   sec  1.00 MBytes  8.39 Mbits/sec
[ 23]   3.00-4.00   sec  1.00 MBytes  8.39 Mbits/sec
[SUM]   3.00-4.00   sec  7.00 MBytes  58.7 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   4.00-5.00   sec  0.00 Bytes  0.00 bits/sec
[  7]   4.00-5.00   sec  0.00 Bytes  0.00 bits/sec
[  9]   4.00-5.00   sec  0.00 Bytes  0.00 bits/sec
[ 11]   4.00-5.00   sec  0.00 Bytes  0.00 bits/sec
[ 13]   4.00-5.00   sec  0.00 Bytes  0.00 bits/sec
[ 15]   4.00-5.00   sec  0.00 Bytes  0.00 bits/sec
[ 17]   4.00-5.00   sec  0.00 Bytes  0.00 bits/sec
[ 19]   4.00-5.00   sec  0.00 Bytes  0.00 bits/sec
[ 21]   4.00-5.00   sec  0.00 Bytes  0.00 bits/sec
[ 23]   4.00-5.00   sec  0.00 Bytes  0.00 bits/sec
[SUM]   4.00-5.00   sec  0.00 Bytes  0.00 bits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   5.00-6.00   sec  1.00 MBytes  8.39 Mbits/sec
[  7]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec
[  9]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec
[ 11]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec
[ 13]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec
[ 15]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec
[ 17]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec
[ 19]   5.00-6.00   sec  1.00 MBytes  8.39 Mbits/sec
[ 21]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec
[ 23]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec
[SUM]   5.00-6.00   sec  2.00 MBytes  16.8 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec
[  7]   6.00-7.00   sec  1.00 MBytes  8.39 Mbits/sec
[  9]   6.00-7.00   sec  1.00 MBytes  8.39 Mbits/sec
[ 11]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec
[ 13]   6.00-7.00   sec  1.00 MBytes  8.39 Mbits/sec
[ 15]   6.00-7.00   sec  1.00 MBytes  8.39 Mbits/sec
[ 17]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec
[ 19]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec
[ 21]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec
[ 23]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec
[SUM]   6.00-7.00   sec  4.00 MBytes  33.6 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   7.00-8.00   sec  1.00 MBytes  8.39 Mbits/sec
[  7]   7.00-8.00   sec  0.00 Bytes  0.00 bits/sec
[  9]   7.00-8.00   sec  0.00 Bytes  0.00 bits/sec
[ 11]   7.00-8.00   sec  1.00 MBytes  8.39 Mbits/sec
[ 13]   7.00-8.00   sec  0.00 Bytes  0.00 bits/sec
[ 15]   7.00-8.00   sec  0.00 Bytes  0.00 bits/sec
[ 17]   7.00-8.00   sec  1.00 MBytes  8.39 Mbits/sec
[ 19]   7.00-8.00   sec  0.00 Bytes  0.00 bits/sec
[ 21]   7.00-8.00   sec  1.00 MBytes  8.39 Mbits/sec
[ 23]   7.00-8.00   sec  1.00 MBytes  8.39 Mbits/sec
[SUM]   7.00-8.00   sec  5.00 MBytes  41.9 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec
[  7]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec
[  9]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec
[ 11]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec
[ 13]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec
[ 15]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec
[ 17]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec
[ 19]   8.00-9.00   sec  1.00 MBytes  8.39 Mbits/sec
[ 21]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec
[ 23]   8.00-9.00   sec  0.00 Bytes  0.00 bits/sec
[SUM]   8.00-9.00   sec  1.00 MBytes  8.39 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec
[  7]   9.00-10.00  sec  1.00 MBytes  8.39 Mbits/sec
[  9]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec
[ 11]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec
[ 13]   9.00-10.00  sec  1.00 MBytes  8.39 Mbits/sec
[ 15]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec
[ 17]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec
[ 19]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec
[ 21]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec
[ 23]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec
[SUM]   9.00-10.00  sec  2.00 MBytes  16.8 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.01  sec  3.00 MBytes  2.51 Mbits/sec  343             sender
[  5]   0.00-10.00  sec  3.00 MBytes  2.52 Mbits/sec                  receiver
[  7]   0.00-10.01  sec  3.00 MBytes  2.51 Mbits/sec  315             sender
[  7]   0.00-10.00  sec  3.00 MBytes  2.52 Mbits/sec                  receiver
[  9]   0.00-10.01  sec  2.00 MBytes  1.68 Mbits/sec  298             sender
[  9]   0.00-10.00  sec  2.00 MBytes  1.68 Mbits/sec                  receiver
[ 11]   0.00-10.01  sec  2.00 MBytes  1.68 Mbits/sec  286             sender
[ 11]   0.00-10.00  sec  2.00 MBytes  1.68 Mbits/sec                  receiver
[ 13]   0.00-10.01  sec  3.00 MBytes  2.51 Mbits/sec  332             sender
[ 13]   0.00-10.00  sec  3.00 MBytes  2.52 Mbits/sec                  receiver
[ 15]   0.00-10.01  sec  3.00 MBytes  2.51 Mbits/sec  319             sender
[ 15]   0.00-10.00  sec  2.00 MBytes  1.68 Mbits/sec                  receiver
[ 17]   0.00-10.01  sec  2.00 MBytes  1.68 Mbits/sec  302             sender
[ 17]   0.00-10.00  sec  2.00 MBytes  1.68 Mbits/sec                  receiver
[ 19]   0.00-10.01  sec  3.00 MBytes  2.51 Mbits/sec  329             sender
[ 19]   0.00-10.00  sec  3.00 MBytes  2.52 Mbits/sec                  receiver
[ 21]   0.00-10.01  sec  2.00 MBytes  1.68 Mbits/sec  307             sender
[ 21]   0.00-10.00  sec  2.00 MBytes  1.68 Mbits/sec                  receiver
[ 23]   0.00-10.01  sec  2.00 MBytes  1.68 Mbits/sec  331             sender
[ 23]   0.00-10.00  sec  2.00 MBytes  1.68 Mbits/sec                  receiver
[SUM]   0.00-10.01  sec  25.0 MBytes  21.0 Mbits/sec  3162             sender
[SUM]   0.00-10.00  sec  24.0 MBytes  20.1 Mbits/sec                  receiver

```

Client -> Server (upload initiated from client)

```

iperf3 -c 127.18.2.1 -P 10 -l 1M
Connecting to host 127.18.2.1, port 5201
[  5] local 127.19.2.1 port 38368 connected to 127.18.2.1 port 5201
[  7] local 127.19.2.1 port 38372 connected to 127.18.2.1 port 5201
[  9] local 127.19.2.1 port 38382 connected to 127.18.2.1 port 5201
[ 11] local 127.19.2.1 port 38396 connected to 127.18.2.1 port 5201
[ 13] local 127.19.2.1 port 38404 connected to 127.18.2.1 port 5201
[ 15] local 127.19.2.1 port 38420 connected to 127.18.2.1 port 5201
[ 17] local 127.19.2.1 port 38424 connected to 127.18.2.1 port 5201
[ 19] local 127.19.2.1 port 38438 connected to 127.18.2.1 port 5201
[ 21] local 127.19.2.1 port 38454 connected to 127.18.2.1 port 5201
[ 23] local 127.19.2.1 port 38466 connected to 127.18.2.1 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  5.00 MBytes  41.9 Mbits/sec  122   55.3 KBytes
[  7]   0.00-1.00   sec  15.0 MBytes   126 Mbits/sec  195    118 KBytes
[  9]   0.00-1.00   sec  6.00 MBytes  50.3 Mbits/sec  151   61.9 KBytes
[ 11]   0.00-1.00   sec  10.0 MBytes  83.8 Mbits/sec  251   89.5 KBytes
[ 13]   0.00-1.00   sec  15.0 MBytes   126 Mbits/sec  246    140 KBytes
[ 15]   0.00-1.00   sec  8.00 MBytes  67.1 Mbits/sec  244    105 KBytes
[ 17]   0.00-1.00   sec  8.00 MBytes  67.1 Mbits/sec  102   88.2 KBytes
[ 19]   0.00-1.00   sec  6.00 MBytes  50.3 Mbits/sec  157   47.4 KBytes
[ 21]   0.00-1.00   sec  11.0 MBytes  92.2 Mbits/sec  120    105 KBytes
[ 23]   0.00-1.00   sec  10.0 MBytes  83.8 Mbits/sec  287   82.9 KBytes
[SUM]   0.00-1.00   sec  94.0 MBytes   788 Mbits/sec  1875
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   1.00-2.00   sec  8.00 MBytes  67.1 Mbits/sec    7    111 KBytes
[  7]   1.00-2.00   sec  11.0 MBytes  92.3 Mbits/sec   10   84.2 KBytes
[  9]   1.00-2.00   sec  8.00 MBytes  67.1 Mbits/sec    6   96.1 KBytes
[ 11]   1.00-2.00   sec  9.00 MBytes  75.5 Mbits/sec   19   77.7 KBytes
[ 13]   1.00-2.00   sec  12.0 MBytes   101 Mbits/sec   21   68.5 KBytes
[ 15]   1.00-2.00   sec  11.0 MBytes  92.3 Mbits/sec    7    111 KBytes
[ 17]   1.00-2.00   sec  10.0 MBytes  83.9 Mbits/sec   25   72.4 KBytes
[ 19]   1.00-2.00   sec  8.00 MBytes  67.1 Mbits/sec    4    100 KBytes
[ 21]   1.00-2.00   sec  10.0 MBytes  83.9 Mbits/sec   27   81.6 KBytes
[ 23]   1.00-2.00   sec  10.0 MBytes  83.9 Mbits/sec   11    100 KBytes
[SUM]   1.00-2.00   sec  97.0 MBytes   814 Mbits/sec  137
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   2.00-3.00   sec  9.00 MBytes  75.5 Mbits/sec   80   90.8 KBytes
[  7]   2.00-3.00   sec  13.0 MBytes   109 Mbits/sec    1    120 KBytes
[  9]   2.00-3.00   sec  10.0 MBytes  83.9 Mbits/sec  129   88.2 KBytes
[ 11]   2.00-3.00   sec  4.00 MBytes  33.6 Mbits/sec   43   63.2 KBytes
[ 13]   2.00-3.00   sec  9.00 MBytes  75.5 Mbits/sec    3   82.9 KBytes
[ 15]   2.00-3.00   sec  9.00 MBytes  75.5 Mbits/sec   62   94.8 KBytes
[ 17]   2.00-3.00   sec  11.0 MBytes  92.3 Mbits/sec    1    109 KBytes
[ 19]   2.00-3.00   sec  6.00 MBytes  50.3 Mbits/sec   53   59.2 KBytes
[ 21]   2.00-3.00   sec  11.0 MBytes  92.3 Mbits/sec    6    107 KBytes
[ 23]   2.00-3.00   sec  5.00 MBytes  41.9 Mbits/sec   63   54.0 KBytes
[SUM]   2.00-3.00   sec  87.0 MBytes   730 Mbits/sec  441
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   3.00-4.00   sec  8.00 MBytes  67.1 Mbits/sec   14   69.8 KBytes
[  7]   3.00-4.00   sec  8.00 MBytes  67.1 Mbits/sec   29   77.7 KBytes
[  9]   3.00-4.00   sec  8.00 MBytes  67.1 Mbits/sec   74   90.8 KBytes
[ 11]   3.00-4.00   sec  7.00 MBytes  58.7 Mbits/sec   37   77.7 KBytes
[ 13]   3.00-4.00   sec  8.00 MBytes  67.1 Mbits/sec    9   82.9 KBytes
[ 15]   3.00-4.00   sec  8.00 MBytes  67.1 Mbits/sec   76   67.1 KBytes
[ 17]   3.00-4.00   sec  14.0 MBytes   117 Mbits/sec    3    150 KBytes
[ 19]   3.00-4.00   sec  6.00 MBytes  50.3 Mbits/sec   21   67.1 KBytes
[ 21]   3.00-4.00   sec  9.00 MBytes  75.5 Mbits/sec   31   79.0 KBytes
[ 23]   3.00-4.00   sec  5.00 MBytes  41.9 Mbits/sec   33   68.5 KBytes
[SUM]   3.00-4.00   sec  81.0 MBytes   679 Mbits/sec  327
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   4.00-5.00   sec  10.0 MBytes  83.9 Mbits/sec    3   77.7 KBytes
[  7]   4.00-5.00   sec  10.0 MBytes  83.9 Mbits/sec    5   93.5 KBytes
[  9]   4.00-5.00   sec  9.00 MBytes  75.5 Mbits/sec    8   54.0 KBytes
[ 11]   4.00-5.00   sec  10.0 MBytes  83.9 Mbits/sec    7   57.9 KBytes
[ 13]   4.00-5.00   sec  9.00 MBytes  75.5 Mbits/sec    5   97.4 KBytes
[ 15]   4.00-5.00   sec  6.00 MBytes  50.3 Mbits/sec   12   38.2 KBytes
[ 17]   4.00-5.00   sec  15.0 MBytes   126 Mbits/sec    4    132 KBytes
[ 19]   4.00-5.00   sec  10.0 MBytes  83.9 Mbits/sec    2    111 KBytes
[ 21]   4.00-5.00   sec  9.00 MBytes  75.5 Mbits/sec    9   96.1 KBytes
[ 23]   4.00-5.00   sec  7.00 MBytes  58.7 Mbits/sec   10   39.5 KBytes
[SUM]   4.00-5.00   sec  95.0 MBytes   797 Mbits/sec   65
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   5.00-6.00   sec  9.00 MBytes  75.5 Mbits/sec    6   71.1 KBytes
[  7]   5.00-6.00   sec  11.0 MBytes  92.3 Mbits/sec   10   98.7 KBytes
[  9]   5.00-6.00   sec  8.00 MBytes  67.1 Mbits/sec    4   55.3 KBytes
[ 11]   5.00-6.00   sec  10.0 MBytes  83.9 Mbits/sec    3    104 KBytes
[ 13]   5.00-6.00   sec  10.0 MBytes  83.9 Mbits/sec   13   81.6 KBytes
[ 15]   5.00-6.00   sec  6.00 MBytes  50.3 Mbits/sec    5   76.4 KBytes
[ 17]   5.00-6.00   sec  14.0 MBytes   117 Mbits/sec    5    116 KBytes
[ 19]   5.00-6.00   sec  12.0 MBytes   101 Mbits/sec    9    107 KBytes
[ 21]   5.00-6.00   sec  12.0 MBytes   101 Mbits/sec    8   97.4 KBytes
[ 23]   5.00-6.00   sec  5.00 MBytes  41.9 Mbits/sec   16   51.3 KBytes
[SUM]   5.00-6.00   sec  97.0 MBytes   814 Mbits/sec   79
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   6.00-7.00   sec  5.00 MBytes  41.9 Mbits/sec   23   30.3 KBytes
[  7]   6.00-7.00   sec  15.0 MBytes   126 Mbits/sec   20    124 KBytes
[  9]   6.00-7.00   sec  9.00 MBytes  75.5 Mbits/sec   42   69.8 KBytes
[ 11]   6.00-7.00   sec  9.00 MBytes  75.5 Mbits/sec   23   42.1 KBytes
[ 13]   6.00-7.00   sec  10.0 MBytes  83.9 Mbits/sec   12   90.8 KBytes
[ 15]   6.00-7.00   sec  8.00 MBytes  67.1 Mbits/sec   17   48.7 KBytes
[ 17]   6.00-7.00   sec  9.00 MBytes  75.5 Mbits/sec   31   67.1 KBytes
[ 19]   6.00-7.00   sec  8.00 MBytes  67.1 Mbits/sec   26   32.9 KBytes
[ 21]   6.00-7.00   sec  11.0 MBytes  92.3 Mbits/sec   14   67.1 KBytes
[ 23]   6.00-7.00   sec  8.00 MBytes  67.1 Mbits/sec   21   31.6 KBytes
[SUM]   6.00-7.00   sec  92.0 MBytes   772 Mbits/sec  229
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   7.00-8.00   sec  7.00 MBytes  58.7 Mbits/sec   10   59.2 KBytes
[  7]   7.00-8.00   sec  15.0 MBytes   126 Mbits/sec   37    107 KBytes
[  9]   7.00-8.00   sec  11.0 MBytes  92.3 Mbits/sec    9    112 KBytes
[ 11]   7.00-8.00   sec  7.00 MBytes  58.7 Mbits/sec    8   68.5 KBytes
[ 13]   7.00-8.00   sec  12.0 MBytes   101 Mbits/sec   25   89.5 KBytes
[ 15]   7.00-8.00   sec  11.0 MBytes  92.3 Mbits/sec    0    129 KBytes
[ 17]   7.00-8.00   sec  10.0 MBytes  83.9 Mbits/sec    6   77.7 KBytes
[ 19]   7.00-8.00   sec  6.00 MBytes  50.3 Mbits/sec    7   51.3 KBytes
[ 21]   7.00-8.00   sec  10.0 MBytes  83.9 Mbits/sec   19   77.7 KBytes
[ 23]   7.00-8.00   sec  7.00 MBytes  58.7 Mbits/sec   13   61.9 KBytes
[SUM]   7.00-8.00   sec  96.0 MBytes   805 Mbits/sec  134
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   8.00-9.00   sec  8.00 MBytes  67.1 Mbits/sec    7   84.2 KBytes
[  7]   8.00-9.00   sec  11.0 MBytes  92.3 Mbits/sec    9   76.4 KBytes
[  9]   8.00-9.00   sec  10.0 MBytes  83.9 Mbits/sec   21   56.6 KBytes
[ 11]   8.00-9.00   sec  7.00 MBytes  58.7 Mbits/sec   12   73.7 KBytes
[ 13]   8.00-9.00   sec  15.0 MBytes   126 Mbits/sec    1    117 KBytes
[ 15]   8.00-9.00   sec  12.0 MBytes   101 Mbits/sec   23    125 KBytes
[ 17]   8.00-9.00   sec  9.00 MBytes  75.5 Mbits/sec    5   97.4 KBytes
[ 19]   8.00-9.00   sec  7.00 MBytes  58.7 Mbits/sec    9   40.8 KBytes
[ 21]   8.00-9.00   sec  11.0 MBytes  92.3 Mbits/sec    1    121 KBytes
[ 23]   8.00-9.00   sec  5.00 MBytes  41.9 Mbits/sec   23   29.0 KBytes
[SUM]   8.00-9.00   sec  95.0 MBytes   797 Mbits/sec  111
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   9.00-10.00  sec  7.00 MBytes  58.6 Mbits/sec   18   80.3 KBytes
[  7]   9.00-10.00  sec  10.0 MBytes  83.8 Mbits/sec    4   60.6 KBytes
[  9]   9.00-10.00  sec  7.00 MBytes  58.6 Mbits/sec   11   82.9 KBytes
[ 11]   9.00-10.00  sec  12.0 MBytes   101 Mbits/sec    4    115 KBytes
[ 13]   9.00-10.00  sec  12.0 MBytes   101 Mbits/sec    6   75.0 KBytes
[ 15]   9.00-10.00  sec  12.0 MBytes   101 Mbits/sec   10   79.0 KBytes
[ 17]   9.00-10.00  sec  10.0 MBytes  83.8 Mbits/sec    4   75.0 KBytes
[ 19]   9.00-10.00  sec  6.00 MBytes  50.3 Mbits/sec    4   75.0 KBytes
[ 21]   9.00-10.00  sec  17.0 MBytes   142 Mbits/sec    2    143 KBytes
[ 23]   9.00-10.00  sec  5.00 MBytes  41.9 Mbits/sec    7   72.4 KBytes
[SUM]   9.00-10.00  sec  98.0 MBytes   821 Mbits/sec   70
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  76.0 MBytes  63.7 Mbits/sec  290             sender
[  5]   0.00-10.01  sec  76.0 MBytes  63.7 Mbits/sec                  receiver
[  7]   0.00-10.00  sec   119 MBytes  99.8 Mbits/sec  320             sender
[  7]   0.00-10.01  sec   117 MBytes  98.0 Mbits/sec                  receiver
[  9]   0.00-10.00  sec  86.0 MBytes  72.1 Mbits/sec  455             sender
[  9]   0.00-10.01  sec  86.0 MBytes  72.1 Mbits/sec                  receiver
[ 11]   0.00-10.00  sec  85.0 MBytes  71.3 Mbits/sec  407             sender
[ 11]   0.00-10.01  sec  84.0 MBytes  70.4 Mbits/sec                  receiver
[ 13]   0.00-10.00  sec   112 MBytes  93.9 Mbits/sec  341             sender
[ 13]   0.00-10.01  sec   111 MBytes  93.0 Mbits/sec                  receiver
[ 15]   0.00-10.00  sec  91.0 MBytes  76.3 Mbits/sec  456             sender
[ 15]   0.00-10.01  sec  91.0 MBytes  76.2 Mbits/sec                  receiver
[ 17]   0.00-10.00  sec   110 MBytes  92.3 Mbits/sec  186             sender
[ 17]   0.00-10.01  sec   109 MBytes  91.3 Mbits/sec                  receiver
[ 19]   0.00-10.00  sec  75.0 MBytes  62.9 Mbits/sec  292             sender
[ 19]   0.00-10.01  sec  74.0 MBytes  62.0 Mbits/sec                  receiver
[ 21]   0.00-10.00  sec   111 MBytes  93.1 Mbits/sec  237             sender
[ 21]   0.00-10.01  sec   110 MBytes  92.2 Mbits/sec                  receiver
[ 23]   0.00-10.00  sec  67.0 MBytes  56.2 Mbits/sec  484             sender
[ 23]   0.00-10.01  sec  67.0 MBytes  56.1 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec   932 MBytes   782 Mbits/sec  3468             sender
[SUM]   0.00-10.01  sec   925 MBytes   775 Mbits/sec                  receiver

```

@Clive_A I understand the question, but I don't understand why this is unexpected or confusing.

Router A has LAN subnet 172.18.0.0/16 and Router B has LAN subnet 172.19.0.0/16. So of course the clients on those LANs are going to have IPs in those subnets.