Dhcp address as default in build

[balanga]

Is it possible to build an image which comes with option proto 'dhcp' in the network lan configuration?

[tmomas]

Yes, use custom files. Search the forum and openwrt.org to see how this is done.

[jeff]

https://openwrt.org/docs/guide-developer/build-system/use-buildsystem#custom_files

[balanga]

Thanks for the pointer, so am correct in thinking I need to copy my customised network file here?

<buildroot dir>/files/etc/config/network

[hnyman]

yes, that is the correct place

[ApoorvaManjunath]

If you put it in etc/config/network. Does it overwrite the whole default nework file or it just changes the proto from static to DHCP?

[vgaetera]

OpenWrt Project: UCI defaults

[ApoorvaManjunath]

so I will be having
files/etc/config - for other custom files
files /etc/uci-defaults/network_customization - for changing the proto
is it ?

also, the script would look something like this right?

#!/bin/sh
uci set network.proto='dhcp'
uci commit network 
exit 0

[vgaetera]

mkdir -p files/etc/uci-defaults
cat << "EOF_cat" > files/etc/uci-defaults/xx_custom
WIFI_SSID="$(sed -n -r -e "s/://g;s/.*(.{4})$/\1/;1p" \
    /sys/class/net/wlan*/address)"
uci -q batch << EOF
set network.lan.proto=dhcp
delete network.lan.ipaddr
delete network.lan.netmask
commit network
set wireless.@wifi-iface[0].ssid=${WIFI_SSID}
commit wireless
EOF
EOF_cat

[ApoorvaManjunath]

Thank you so much .. its a great help

one more confirmation.

can i also add

set wireless.ap.ssid=$(cat /sys/class/net/wlan*/address | head -n 1
 | tr -d ":" | tr -d "\n"| tail -c 4)

into the same file?

[vgaetera]

I've updated the code above.

[Apoorva]

Thank you so much