Setting Permanent Static IP in Ubuntu

Introduction

This document describes how to assign a permanent static IP address for a network interface on Ubuntu.

Howto

Open the file /etc/network/interfaces ;.

sudo vi /etc/network/interfaces

If you are using DHCP for your primary network card which is usually eth0, you will see the following lines;

auto eth0

iface eth0 inet dhcp

As you can see, it’s using DHCP right now. We are going to change dhcp to static, and then there are a number of options that should add and here is the example and you can change these settings according to your network settings.

auto eth0

iface eth0 inet static

address 192.168.1.100

netmask 255.255.255.0

network 192.168.1.0

broadcast 192.168.1.255

gateway 192.168.1.1

Restart the neworking service using the following command;

sudo /etc/init.d/networking restart

and it is done...

References

For original document, check out here.