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rte-mac-setup.md

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Setup MAC address at U-Boot

After flashing the card with the new image, the MAC will be generated from the board's Serial ID and stored in U-Boot's environment variable on the first boot.

If no Serial ID is found in U-Boot environment, the MAC will be regenerated.

If Serial ID change (e.g. by booting the SD card on another device), the MAC will be regenerated again.

If Serial ID is the same, only unset MAC addresses will be generated.

You can change the address by modifying the variable from U-Boot command line. Execute the following instructions:

  1. Stop loading the U-Boot by hitting any key:

    Hit any key to stop autoboot:  0

  2. Overwrite the variable ethaddres:

    => setenv ethaddr 9a:08:5d:c7:cb:ce

  3. Save changes:

    => saveenv

  4. Restart the platform:

    => run bootcmd

Note: If Serial ID change, you will lost your custom MAC.