Re: [Xen-devel] [PATCH]: xl: use libuuid to generate random UUID's

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

 On 08/04/2010 07:19 PM, Ian Pratt wrote:
> The best approach is to generate locally administered MAC addresses hence 
> giving us 46 bits of freedom rather than XenSource registered OUI addresses 
> which have just 24 bits -- collisions will be *much* less likely. Further, it's 
> best not to generate random addresses every time, but to derive the MAC address 
> from a good hash of the VM UUID and the NIC number so that they are 
> deterministic.
Yes!  I've been doing that manually (where my hash is '+'), but its 
irritating to keep doing over and over.
    J

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