The MAC address should come from the EEPROM. You can run eeprom-dump on the
device to see what MAC addresses are programmed in it. You can use
eeprom-init to program the EEPROM. Run either with --help to see the syntax.

https://github.com/EttusResearch/uhd/blob/master/mpm/tools/README.md

I'm curious if your devices somehow have the same MAC in the EEPROM or if
it's reverting to some default because it can't read the EEPROM, or the
EEPROM isn't properly programmed.

Wade

On Mon, Mar 11, 2024 at 12:01 PM Marcus D. Leech <patchvonbr...@gmail.com>
wrote:

> On 11/03/2024 11:42, edenmclaughlin...@gmail.com wrote:
>
> Hi,
>
> We had a need for a multiple device - single subnet setup. After updating
> multiple E320’s to a newer UHD version, me and my colleague, we realized
> that all of the devices share a common MAC address. This results in
> unstable connections within the network. As for in this thread
> <https://lists.ettus.com/empathy/thread/POYUYNB4RH5MFPADPFYTSLLKVAWT64M6?hash=POYUYNB4RH5MFPADPFYTSLLKVAWT64M6#POYUYNB4RH5MFPADPFYTSLLKVAWT64M6>
> is there a non-third party, Ettus supported, homegrown way of
> restoring/updating the MAC address of a network device, specifically E320?
>
> Thanks.
>
> Trying to attract R&D's attention on this.  I know we went through this
> with E310 years and years ago, but it was resolved.
>
>
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