Linux network namespace

netnamespace.sh

#!/bin/bash

set -o pipefail

string="$1"

if [ "$string" = "up" ]; then

ip netns add net1
ip netns add net2

ip link add veth1 netns net1 type veth peer name veth2 netns net2

ip netns exec net1 ip addr add 10.100.0.1/16 dev veth1
ip netns exec net2 ip addr add 10.100.0.2/16 dev veth2

ip netns exec net1 ip link set lo up
ip netns exec net2 ip link set lo up

ip netns exec net1 ip link set veth1 up
ip netns exec net2 ip link set veth2 up

ip netns exec net1 ping -c 3 10.100.0.2

ip netns exec net2 ping -c 3 10.100.0.1
fi



if [ "$1" == "down" ]; then
ip netns delete net1
ip netns delete net2
fi