Re: [Bluez-devel] New HCI-USB device, no MAC?

[Stefan Seyfried <seife@suse.de>]

Hi,

On Wed, Nov 15, 2006 at 02:47:13PM +0100, Marcel Holtmann wrote:
> Hi Nils,
> =

> > Then I created a small shell script which sets a "more correct" address
> > than the default 11:11:11:11:11:11. I assume in this script that an
> > ethernet device is present in the system as eth0 and use its MAC for the
> > Bluetooth dongle too.
> > =

> > I did this for two reasons:
> > 1. On the same machine I always want to have the same BDADDR, so random
> > was no choice.
> > 2. The ethernet addresses also have to follow the same rules as
> > Bluetooth MAC addresses, i.e. they have to be unique. So the probability
> > of a collision is very low.
> =

> and now PAN will stop working, because the eth0 and bnep0 will have the
> same MAC address. Not a good idea.

Well, after reading http://en.wikipedia.org/wiki/MAC_address i guess that
we just could set bit 1 of the 6th byte to signal "locally administered"
_and_ distinguish that address from the ethernet MAC address.

Or is this totally wrong?

But then, what happens if you plug two of those adapters into one machine?
-- =

Stefan Seyfried
QA / R&D Team Mobile Devices        |              "Any ideas, John?"
SUSE LINUX Products GmbH, N=FCrnberg  | "Well, surrounding them's out." =


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