MAC address fix help

Hardware Hub Networking
1

Im new here, I hope this is the proper place to post this.

I have a Gigabyte Z490 Vision D Motherboard. It has 2 ethernet adapters - Intel v225 and v219.

Both adapters have the same MAC address - one is incorrect as I know the originals via the stickers on the MOBO. I can only use one at a time due to the duplicate MAC.

From what I have found online I believe I need a specific version of ‘eeupdate’ to change it. But all the eeupdate versions I can find do not work. I tried Intel’s site but they seem to be under lock for developers.

I dont know enough about this level of hardware to know if Im searching the correct terms or if this is readily available somewhere else.
I have contacted Gigabyte tech support but they dont seem to know enough and/or will not escalate it to someone who does.

I need both working properly as my audio devices uses ethernet - hence why I got this MOBO.

Any direction would be appreciated - thanks.

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2

I don’t know about reflashing the EEPROM but if you have Linux you can just override the MAC address:

Get udev PCI path of the bad NIC:

udevadm info /sys/class/net/eth0 | grep ID_PATH
E: ID_PATH=pci-0000:81:00.0

Create systemd.link file:

/etc/systemd/network/10-eth.link:

[Match]
Path=pci-0000:81:00.0

[Link]
MACAddress=00:11:22:33:44:55
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3

thank you for the reply and instructions.
I am aware of spoofing but I want it corrected on the EEPROM.

4

Did you check that both NICs show up with the same MAC to a switch?

5

Via firmware update packages you can get your hands on flashing tools that should allow you to change the mac. But proceed with caution, be careful not to flash the wrong firmware etc.

Specifically with this package (which comes from Lenovo originally), just extract the driver and do not install. It should not flash an incompatible firmware any way, but if it does it may be unrecoverable! Then you’ll find the tools and readmes for the tools in the extracted directories. The tool has an option to update the Mac without changing anything else.

1 Like
6

Thank you, this is what I was looking for. gonna give a go this weekend.
I really appreciate it.