[Olsr-users] AHCP

[Bernd Petrovitsch]

On Wed, 2009-02-25 at 14:28 +0100, Roar Bjørgum Rotvik wrote:
[....]
> But some causes for duplicate MAC:
> 1) Bug in provisioning the cards from the manufacturer.
> 2) Reuse of the MAC address space, as each manufacturer gets a range of 
> MAC-addresses and may reuse the MAC addresses when the range is used up. 
> How often this happens I don't know.
And another data point from a former life:
3) A former company built an embedded system with a serial number chip
   and two onboard ethernet interfaces. Both MAC addresses are generated
   via (different) hash functions out of the serial number at boot time.
   And no, there is no feasible way to guarantee no clashes.

	Bernd
-- 
Firmix Software GmbH                   http://www.firmix.at/
mobil: +43 664 4416156                 fax: +43 1 7890849-55
          Embedded Linux Development and Services