[Users] mac address re-use

[Keith Robertson]

On 01/07/2013 05:22 PM, Jonathan Horne wrote:
> my 3.2 install seems to be reusing mac address of formerly-deleted 
> guests.  is this the normal behavior, and or can i turn this off?  i 
> would prefer to have a unique mac address for each new VM created.
>
> thanks,
> jonathan
>
> ------------------------------------------------------------------------
> This is a PRIVATE message. If you are not the intended recipient, 
> please delete without copying and kindly advise us by e-mail of the 
> mistake in delivery. NOTE: Regardless of content, this e-mail shall 
> not operate to bind SKOPOS to any order or other contract unless 
> pursuant to explicit written agreement or government initiative 
> expressly permitting the use of e-mail for such purpose.
>
>
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
I believe re-use is intentional.  I suspect oVirt uses the IEEE [1] 
space allocated to Qumranet and that space is relatively small. There 
were previous discussions on the list regarding the probability of 
collisions/exhaustion, IIRC.  In any case, you want re-use to prevent 
the possibility of exhaustion and because a program shouldn't just go 
randomly creating addresses from any available OUI block.

Cheers,
Keith

[1] http://standards.ieee.org/develop/regauth/oui/public.html
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ovirt.org/pipermail/users/attachments/20130107/103a8f89/attachment-0001.html>