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

Michael Brown mbrown at fensystems.co.uk
Tue Mar 5 16:36:54 UTC 2013

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.


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