#!/bin/sh
#
#    Loopback          Loopback
# enp7s0   enp8s0   enp9s0   enp10s0
#  [ ]      [ ]      [ ]      [ ]
#   |        |        |        |
#   +--------+        +--------+
#

sync

ip netns del test1 >/dev/null 2>&1
ip netns del test2 >/dev/null 2>&1

sleep 1

ip netns add test1
ip netns add test2

ip link set enp7s0 netns test1
ip link set enp8s0 netns test2
ip netns exec test1 ip addr add 172.16.0.1/24 dev enp7s0
ip netns exec test2 ip addr add 172.16.0.100/24 dev enp8s0
ip netns exec test1 ip link set dev enp7s0 up
ip netns exec test2 ip link set dev enp8s0 up

ip link set enp9s0 netns test1
ip link set enp10s0 netns test2
ip netns exec test1 ip addr add 172.16.2.1/24 dev enp9s0
ip netns exec test2 ip addr add 172.16.2.100/24 dev enp10s0
ip netns exec test1 ip link set dev enp9s0 up
ip netns exec test2 ip link set dev enp10s0 up

sleep 10

ip netns exec test1 iperf3 -D -s -p 5201 --logfile /dev/null
ip netns exec test1 iperf3 -D -s -p 5202 --logfile /dev/null
ip netns exec test2 iperf3 -c 172.16.0.1 -p 5201 --bidir --logfile /dev/null &
ip netns exec test2 iperf3 -c 172.16.2.1 -p 5202 --bidir --logfile /dev/null &

sync
cat /dev/kmsg