We have tested the latest stable OpenWRT image (24.10):
And after using RPI-Imager flash the latest image, you can connect the ethernet cable to the right eth port:
The default access adress is 192.168.1.1 (no password by default), where you can enter the openwrt luci interface:
If your CM4 has a wireless module, you can also activate the wireless interface.
And you can also ssh to the device:
Some people may find the left ethernet port (left one) is unable to use, you need to enable the port from either web ui or through the luci config command, here is an example of bring up interfaces:
config interface 'loopback'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'
option device 'lo'
config globals 'globals'
option ula_prefix 'fd95:27c5:3e18::/48'
option packet_steering '1'
config interface 'lan'
option proto 'static'
option ipaddr '192.168.1.1'
option netmask '255.255.255.0'
option ip6assign '60'
option device 'br-lan'
config interface 'wan'
option proto 'dhcp'
option device 'eth1'
config interface 'vpn0'
option proto 'none'
option device 'tun0'
config interface 'docker'
option device 'docker0'
option proto 'none'
option auto '0'
config device
option type 'bridge'
option name 'docker0'
config device
option name 'br-lan'
option type 'bridge'
list ports 'eth0'
As for now, tweaking these configurations is needed.