[OpenWrt-Devel] How to pre-define the LAN IP

Bill Yuan bycn82 at gmail.com
Wed Feb 28 10:56:28 EST 2018

surely I prefer the option 1,
I thought the wiki is out date already, because I found the
etc/config/network in packages/base-files
I am trying it

On 28 February 2018 at 23:47, Magnus Kroken <mkroken at gmail.com> wrote:

> Hi Bill
> On 28.02.2018 15:18, Bill Yuan wrote:
>> Hi,
>> I noticed the default LAN IP is still even after I configured
>> the "preinit network interface" in "preinit configuration options". Can
>> someone please share with me where is the proper way to pre-define the LAN
>> IP?
> The build system does not include a way to do this. You can do this by
> including additional files in your image. To do this, create a directory
> "files" in the root of the build directory (same directory you run make
> menuconfig from).
> You can either include a full network configuration file in the image, or
> you can include a script that will execute after the device has booted,
> which configures the IP address.
> For a full configuration, configure the network as you want it to be, then
> copy /etc/config/network from your OpenWrt device to your files/ folder, so
> it ends up as: files/etc/config/network.
> For a script, here is a snippet of how I do this on my devices. You can
> omit the if check, I do this so I can use the same script on several
> devices.
> --8<--
> #!/bin/sh
> if [ "$(ip link show eth0 | awk '/ether/ {print $2}')" ==
> "11:22:33:44:55:66" -a "$(uci -q get network.lan.ipaddr)" == "" ]
> then
>         uci -q set network.lan.ipaddr=''
> fi
> /etc/init.d/network restart
> -->8--
> Put this in files/etc/uci-defaults/zz_changeip4.sh. The zz prefix ensures
> the file is executed last in the uci-defaults folder, if it executes too
> early the base network config may not be in place yet.
> Regards,
>> bycn82
> Regards
> /Magnus
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