imx93 FRDM mac address randomisation

sakshi123 · ‎10-01-2025

I am working with an i.MX93 FRDM board running the base image provided by NXP (link: "https://github.com/nxp-imx/meta-imx"). The issue I’m facing is that the MAC address changes every time the board is powered on. Is there an image available in which the MAC address remains fixed across reboots and does not change?

Currently, because the MAC address keeps changing on each reboot, the pool of allowed MAC addresses gets exhausted, preventing other devices from connecting to the network.

We are specifically looking for a solution at the image level, not through any additional service or workaround

danielchen · ‎10-01-2025

Hi @sakshi123

I would suggest you configure a MAC address using ifconfig. you can use the following command:

ifconfig <interface> hw ether <MAC-address>

For example: ifconfig eth0 hw ether 00:11:22:33:44:55

Regards

Daniel

sakshi123

I have a follow-up question regarding the MAC address for the i.MX93 FRDM board.

From the i.MX93 FRDM datasheet (screenshot attached below), it is mentioned that:

Question is : Is there any physical setup on the i.MX93 board to configure or set a static MAC address for every bootup, or is the MAC address always fused and fixed inside the i.MX93 processor?

danielchen

Hi,

Please refer to below link to write MAC address.

Solved: i.MX91 fusemap spreadsheet needed to write MAC addresses into OTP - NXP Community

Regards

Daniel