Why I asked is because of that bridge problem:

http://forum.openvz.org/index.php?t=msg&th=5291&#msg_26576

A bridge always select the lowest mac address.

This patch solves the problem, but i am not sure if there are side effects.

https://lists.linux-foundation.org/pipermail/bridge/2008-June/005895.html
 
The SWSOFT OID is quite 'low', so the problem occurs frequently.

- Dietmar


> -----Ursprüngliche Nachricht-----
> Von: users-bounces@openvz.org 
> [mailto:users-bounces@openvz.org] Im Auftrag von Kirill Korotaev
> Gesendet: Mittwoch, 11. Juni 2008 15:47
> An: users@openvz.org
> Betreff: Re: [Users] Veth mac generation
> 
> and yes and no.
> These upper 3 bytes are reserved for our company, so 
> selecting them you will never conflict with other devices in 
> network infrastructure.
> i.e. the worst what can happen 2 veths will conflict.
> 
> On the other hand - you are right, 6 bytes are better :)