#!/bin/bash
set -e

ip link del veth0 2>/dev/null || true
ip netns del testns 2>/dev/null || true

ip link add veth0 type veth peer name veth1
ip addr add 10.200.1.1/24 dev veth0
ip link set veth0 up

ip netns add testns
ip link set veth1 netns testns
ip netns exec testns ip addr add 10.200.1.2/24 dev veth1
ip netns exec testns ip link set veth1 up
ip netns exec testns ip link set lo up

echo "veth0 (host) = 10.200.1.1"
echo "veth1 (testns) = 10.200.1.2"