Fri. Mar 24th, 2023
CM4 w/seeed studio dual nic carrier board.

Hardware List:
1 – Dual Nic Carrier Board – $45
2 – Raspberry Pi 4 – CM4 – $129
3 – Case from seeedstudio website – I printed my own case – Unknown Value
4 – Power Adapter for the Pi – $11

note: run an ethernet cable from your pc to this mini router’s LAN Port

1 – ssh in to the new router -> ssh user@ip_address
2 – type passwd > put in your new password > press enter
note: at the prompt
3 – Type: uci set network.lan.ipaddr=”Your_IP_Here” > press enter
4 – Type: uci commit network > press enter
5 – /etc/init.d/network restart > press enter
6 – Open your browser and type the ip you entered above.

7 – Network > Interfaces > at the bottom click Add new interface

8 – new interface name here – Protocol > dhcp client – device > your_nic_here

Usually your br-lan (ISP/Router) is going to be the WAN side with a DHCP and your Client Device (LAN) will be a Static IP.

9 – Choose the interface you just created > edit > Protocol – DHCP Client > Device – eth1 > check the bring up on boot check box

10 – Firewall Settings > wan > Create / Assign firewall-zone – Choose WAN in Dropdown – save > then save and apply.

11 – On your workstation Choose your OpenWRT LAN IP as your gateway for ex:

12 – surf to internet to see if it is working.

I know this one was a short one but I felt the need to post it. I will be posting another one with a Raspberry Pi 4 Model B. It only has one nic but you can use a USB to Ethernet adapter on the USB 3.0 port of the RPi4 as your Second Nic and it will install the same way as this did. Just different hardware.

I hope you enjoyed this article, Please come back soon. Thank you.

By Michael Cooper

Senior Systems Engineer | 30 years in IT | RPi Hobbiest

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