[ipxe-devel] Dell C6220 lkrn MAC address issue / Intel I350

Matthew Drobnak mdrobnak at appnexus.com
Tue Mar 5 16:44:21 UTC 2013

Apologies. I totally missed this.

I will try and get a pic of the chip later today, along with lspci -v 


On 03/05/2013 11:36 AM, Michael Brown wrote:
> On 05/03/13 16:08, Matthew Drobnak wrote:
>> Since there's been a lot of activity this morning, I was wondering if
>> anyone made any progress on this.
> I replied (belatedly) on this a few days ago:
> On 01/03/13 17:09, Michael Brown wrote:
>> The EEPROM contains a single base MAC address (78:45:c4:f8:9c:e4 in this
>> case), from which the MAC addresses for each port are derived by XORing
>> the port number with the low byte of the MAC address.
>> I'm puzzled by a few things:
>> - Why do we have port 0 and port 3, rather than port 0 and port 1? What
>> does "lspci -v" show for this NIC?
>> - Why is the autoloaded MAC address for port 0 _lower_ than the base MAC
>> address stored in the EEPROM? Do you have the Intel model number for
>> this NIC (i.e. the number physically printed on the controller chip)? If
>> so, the datasheet might shed some light.
> Michael

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