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

from [Jeremy Fitzhardinge]

[Permanent Link][Original]

To:	Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>
Subject:	Re: [Xen-devel] [PATCH]: xl: use libuuid to generate random UUID's
From:	Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date:	Wed, 04 Aug 2010 19:27:47 -0700
Cc:	Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>, "Gianni Tedesco \(3P\)" <gianni.tedesco@xxxxxxxxxx>, Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx>
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 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 itsirritating to keep doing over and over.


    J

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[Xen-devel] [PATCH]: xl: use libuuid to generate random UUID's, Gianni Tedesco RE: [Xen-devel] [PATCH]: xl: use libuuid to generate random UUID's, Ian Pratt Re: [Xen-devel] [PATCH]: xl: use libuuid to generate random UUID's, Jeremy Fitzhardinge <= Re: [Xen-devel] [PATCH]: xl: use libuuid to generate random UUID's, Ian Campbell Re: [Xen-devel] [PATCH]: xl: use libuuid to generate random UUID's, Vincent Hanquez Re: [Xen-devel] [PATCH]: xl: use libuuid to generate random UUID's, Stefano Stabellini Re: [Xen-devel] [PATCH]: xl: use libuuid to generate random UUID's, Jeremy Fitzhardinge Re: [Xen-devel] [PATCH]: xl: use libuuid to generate random UUID's, Vincent Hanquez Re: [Xen-devel] [PATCH]: xl: use libuuid to generate random UUID's, Christoph Egger Re: [Xen-devel] [PATCH]: xl: use libuuid to generate random UUID's, Vincent Hanquez Re: [Xen-devel] [PATCH]: xl: use libuuid to generate random UUID's, Stefano Stabellini Re: [Xen-devel] [PATCH]: xl: use libuuid to generate random UUID's, Stefano Stabellini RE: [Xen-devel] [PATCH]: xl: use libuuid to generate random UUID's, Ian Jackson

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