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List:       xen-devel
Subject:    Re: [Xen-devel] [patch 3/5] xen: xm/create mac selection
From:       Jody Belka <lists-xen () pimb ! org>
Date:       2005-01-31 23:50:35
Message-ID: 20050131235035.GN2144 () faith ! gentoo ! org
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On Mon, Jan 31, 2005 at 11:36:16PM -0000, Ian Pratt wrote:
> Your patch certainly helps by rejecting duplicates, but I'd also like to
> see the algorithm used to generate the MACs changed too.
> 
> We currently seed the random number generator with random.seed() which I
> suspect seeds it with the system time in seconds. At the very least, we
> should use something more fine grained to avoid other domains started in
> quick succession getting the same MACs.
> 
> A better approach might be to seed it with a hash of the config file
> plus any parameters passed into it (e.g. vmid), plus the vif number.
> 
> Would you mind knocking something up?

Sure, i'd be happy to. If nothing comes up i'll try and have something
posted sometime tomorrow.


J

-- 
Jody Belka
knew (at) pimb (dot) org


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