[AusNOG] Internal use MAC addresses

[Lloyd Wood]

"If it's not unique, it's not ethernet."

Um, no. See ausnog thread starting
http://lists.ausnog.net/pipermail/ausnog/2013-February/016484.html

On 23 Feb 2013, at 20:58, Paul Wilkins <paulwilkins369 at gmail.com> wrote:

> Alternatively, set B2 in the MAC's MSB to 1.This defines a locally administered address.
> 
> That said, if you buy a NIC that's branded "ethernet", the burnt in address will have been allocated by IANA to the manufacturer and will be unique. If it's not unique, it's not ethernet.
> 
> Paul Wilkins
> 
> On Sat, Feb 23, 2013 at 8:40 PM, Lloyd Wood <lloyd.wood at yahoo.co.uk> wrote:
>> http://www.denx.de/wiki/DULG/WhereCanIGetAValidMACAddress
>> 
>> 
>> On 23 Feb 2013, at 20:27, Geordie Guy <elomis at gmail.com> wrote:
>> 
>>> Hey folks,
>>> 
>>> Is there a "555" style best practice for MAC addresses?  I'm mucking around with programming electronics and writing Ethernet bits and pieces and while it's commonplace for me to hardcode 192.168.0/24 addresses to projects, I also need to code MAC addresses.  Is there an OUI equivalent of 172.16/192.168/10.?  or does nobody care because it's not relevant outside a layer 2 domain...
>>> 
>>> 
>>> - Geordie
> 
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