Connecting to host 10.100.0.1, port 5201
[  5] local 10.100.0.2 port 43404 connected to 10.100.0.1 port 5201
[  7] local 10.100.0.2 port 43420 connected to 10.100.0.1 port 5201
[ ID][Role] Interval           Transfer     Bitrate         Retr  Cwnd
[  5][TX-C]   0.00-1.00   sec  13.2 MBytes   111 Mbits/sec  178   11.3 KBytes
[  7][RX-C]   0.00-1.00   sec  14.2 MBytes   119 Mbits/sec
[  5][TX-C]   1.00-2.00   sec  13.8 MBytes   116 Mbits/sec  186   12.7 KBytes
[  7][RX-C]   1.00-2.00   sec  13.6 MBytes   114 Mbits/sec
[  5][TX-C]   2.00-3.00   sec  14.0 MBytes   117 Mbits/sec  209   8.48 KBytes
[  7][RX-C]   2.00-3.00   sec  14.0 MBytes   117 Mbits/sec
[  5][TX-C]   3.00-4.00   sec  13.7 MBytes   115 Mbits/sec  196   11.3 KBytes
[  7][RX-C]   3.00-4.00   sec  13.9 MBytes   116 Mbits/sec
[  5][TX-C]   4.00-5.00   sec  14.0 MBytes   117 Mbits/sec  191   12.7 KBytes
[  7][RX-C]   4.00-5.00   sec  13.9 MBytes   117 Mbits/sec
[  5][TX-C]   5.00-6.00   sec  13.6 MBytes   114 Mbits/sec  167   9.90 KBytes
[  7][RX-C]   5.00-6.00   sec  13.7 MBytes   115 Mbits/sec
[  5][TX-C]   6.00-7.00   sec  13.9 MBytes   117 Mbits/sec  186   11.3 KBytes
[  7][RX-C]   6.00-7.00   sec  14.0 MBytes   117 Mbits/sec
[  5][TX-C]   7.00-8.00   sec  13.2 MBytes   111 Mbits/sec  209   12.7 KBytes
[  7][RX-C]   7.00-8.00   sec  14.1 MBytes   118 Mbits/sec
[  5][TX-C]   8.00-9.00   sec  13.8 MBytes   116 Mbits/sec  182   14.1 KBytes
[  7][RX-C]   8.00-9.00   sec  13.6 MBytes   114 Mbits/sec
[  5][TX-C]   9.00-10.00  sec  14.4 MBytes   121 Mbits/sec  192   9.90 KBytes
[  7][RX-C]   9.00-10.00  sec  13.3 MBytes   112 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID][Role] Interval           Transfer     Bitrate         Retr
[  5][TX-C]   0.00-10.00  sec   138 MBytes   115 Mbits/sec  1896             sender
[  5][TX-C]   0.00-10.00  sec   137 MBytes   115 Mbits/sec                  receiver
[  7][RX-C]   0.00-10.00  sec   138 MBytes   116 Mbits/sec  1578             sender
[  7][RX-C]   0.00-10.00  sec   138 MBytes   116 Mbits/sec                  receiver

ifconfig after. this is after some testing so it isn't just the iperf part

end0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.100.0.1  netmask 255.255.255.0  broadcast 0.0.0.0
        ether 6c:cf:39:00:2a:d5  txqueuelen 1000  (Ethernet)
        RX packets 1238533  bytes 1549159816 (1.4 GiB)
        RX errors 10760  dropped 0  overruns 0  frame 162
        TX packets 2621297  bytes 3733902368 (3.4 GiB)
        TX errors 16  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 12  

end1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.100.0.2  netmask 255.255.255.0  broadcast 0.0.0.0
        inet6 fe80::6ecf:39ff:fe00:2ad6  prefixlen 64  scopeid 0x20<link>
        ether 6c:cf:39:00:2a:d6  txqueuelen 1000  (Ethernet)
        RX packets 524675  bytes 669796293 (638.7 MiB)
        RX errors 6430  dropped 0  overruns 0  frame 9
        TX packets 522147  bytes 668968964 (637.9 MiB)
        TX errors 164  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 15