Two Methods to Change LAN IP Address in OpenWrt

What is OpenWrt? OpenWrt is commonly found in third-party firmware for wireless routers (soft routers). It is an efficient, reliable, and feature-rich router firmware. OpenWrt can be described as an embedded Linux distribution. (The mainstream router firmware includes dd-wrt, tomato, openwrt, and padavan.) Compared to a single, static system, OpenWrt’s package management provides a fully writable filesystem, allowing you to customize your device to suit any application.

The network configuration file for OpenWrt is /etc/config/network, which is responsible for configuring the switching chip VLAN, network interfaces, and routing.

Method 1: Change using command

We can enter the ifconfig command in the console to view the system’s IP address

root@OpenWrt:/# ifconfig

First, enter in the SSH console

vi    etc/config/network

root@OpenWrt:~# vi /etc/config/network

config interface 'loopback'
        option ifname 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'

config globals 'globals'
        option packet_steering '1'

config interface 'lan'
        option type 'bridge'
        option proto 'static'
        option ipaddr '192.168.1.1'
        option netmask '255.255.255.0'
        option ip6assign '60'
        option _orig_ifname 'eth0'
        option _orig_bridge 'true'
        option ifname 'eth0 eth1 eth2'

config interface 'wan'
        option proto 'dhcp'
        option ifname 'eth3'

Simply change 192.168.1.1 to the desired IP address, for example, 192.168.8.1 Press i to enter modification mode, after modifying, press esc to exit editing, then :wq to save and exit. After saving and exiting, restart the development board (if using the command, you can use reboot), and you will find the IP address has changed to 192.168.8.1.

Method 2: Change using the WEB console

Log in to the OpenWrt WEB console

Click on Network –> Interfaces –> LAN

Click Edit to enter the LAN interface modification page

Change the IPv4 Address from 192.168.1.1 to your desired IP, and after modification, click Save & Apply at the bottom.