This hands-on guide will help you understand how networking works with Docker and containers in linux. Learn in these simple steps how to customise and create user defined network. When you install Docker, it creates three networks automatically. You can list *these networks using the docker network ls command: root@
> ip command in Linux is used to show / manipulate routing, devices, policy routing and tunnels. It is a provided by iproute2 package. ifconfig command which is provided by net-tools package has been around since long and will stay around. ip is more powerful and modern and will eventually replace it.