I meant in the onboard EEPROM...

On Thursday, October 19, 2017 at 8:38:27 AM UTC-4, Dan Brown wrote:
>
> I have noticed that both of my PocketBeagles have unique MACs that do not 
> move with the SD card when connecting via USB.  (I tried switching the 
> cards between PBs and the MACs stay with the boards.)  Could it be 
> something in the onboard flash?
>
> On Wednesday, October 18, 2017 at 5:23:54 PM UTC-4, Steven Keller wrote:
>>
>> It appears that the ENC28 MAC address is random as well.  It doesn't show 
>> up with any vendor when doing an online MAC lookup.  I wonder if it is 
>> possible to populate it with the same one that the USB Ethernet interface 
>> uses when attaching to a PC.  I haven't looked but my guess is there is a 
>> MAC address burned into the processor.
>>
>> --steve
>>
>> On Wednesday, October 18, 2017 at 8:36:58 AM UTC-5, Graham wrote:
>>>
>>> I have gotten an additional two MAC addresses (total five, now) 
>>> presented by the ETH-WIZ.
>>> (So, it has appeared on five different IP addresses in my network, and I 
>>> can't give it a static address, since that is paired with the MAC address.)
>>> It never changes while running, and usually not when rebooting, but will 
>>> almost always change the MAC address after loading a new image on the PB.
>>> And none of them are 'legal'. (That is, no recognizable OUI identifying 
>>> the manufacturer.)
>>>
>>> There must not be a memory for the MAC address in the ETH-WIZ, and the 
>>> driver makes one up using a random number generator, upon booting on a new 
>>> image for the first time.
>>>
>>> I am tired of chasing this Ethernet interface all over my network 
>>> address space.
>>> .
>>> --- Graham
>>>
>>> ==
>>>
>>

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