How is the Ethernet MAC address for usb0 defined?

Dr. H. Nikolaus Schaller hns at
Thu Aug 9 15:07:49 CEST 2007

Am 09.08.2007 um 07:18 schrieb Mikko J Rauhala:

> [Replying to you guys directly in addition to the list since the list
> seems to be having problems.]
> On ti, 2007-08-07 at 17:43 -0400, michael at wrote:
>> This [static USB MAC address determining and setting] is
>> getting a little bit more complicated, and more interesting. I  
>> think I may
>> go ahead and do this one...
> Yeah, sounds good. As far as choosing the actual address goes, I got
> around to reminding myself how to generate proper link-local MAC
> addresses. Seems that turning the universally administered  
> Bluetooth MAC
> into a different link-local MAC usable on the USB interface would  
> be as
> simple as to flip the second least significant bit of the most
> significant byte into a 1¹. This would give us Neo-spesific static

That sounds pretty simple - and IMHO the probability of  conflict is  
as low as the number of Bluetooth devices out there...

> link-local MACs in the simplest possible manner, and will allow us to
> easily tie together the BT and USB MACs also from the host side, if
> desired. How's that sound to you?
> As an aside, last night I wrote up some suggestions on how to deal  
> with
> USB network IP and routing settings in the final product, with use
> cases². You're welcome to add your own input to the wiki, if you have
> any; that's what it's there for.
> ¹ <URL: >
> ² <URL: >
> -- 
> Mikko J Rauhala <mjrauhal at>
> University of Helsinki

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