IPv6 Source Address Selection on Mac OS X Lion

Dan Wing dwing at cisco.com
Mon Dec 19 20:17:19 CET 2011


> -----Original Message-----
> From: Mark Blackman [mailto:mark at exonetric.com]
> Sent: Friday, December 16, 2011 10:11 AM
> To: Gert Doering
> Cc: Dan Wing; 'Christoph Stahl'; ipv6-ops at lists.cluenet.de
> Subject: Re: IPv6 Source Address Selection on Mac OS X Lion
> 
> 
> On 16 Dec 2011, at 18:05, Gert Doering wrote:
> 
> > Hi,
> >
> > On Thu, Dec 15, 2011 at 09:31:42AM -0800, Dan Wing wrote:
> >> It depends on your definition of "better".  If your definition is
> >> "prefer IPv6", you are right that OSX Lion's algorithm fails.  If
> >> your definition is "connect to whichever is fastest", OSX Lion's
> >> algorithm wins.
> >
> > "consistent behaviour".  And this is where Lion fails, because it
> > flip-flops back and forth between protocols even if nothing changes
> > in the network.
> 
> Isn't this behaviour what Chrome does too?
> 
> http://src.chromium.org/viewvc/chrome?view=rev&revision=85934

Chrome gives IPv6 a 300ms head start.

-d





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