IPv6 brokenness in Norway

Mike Hyde mhyde at monitor.mts.net
Tue Oct 5 16:44:18 CEST 2010

Just wondering, are your DNS servers set to respond to AAAA requests when it is sourced from an IPv4 address?

On Oct 5, 2010, at 1:19 AM, Tore Anderson wrote:

> * Eric Vyncke (evyncke)
>> If still run your measurement, would you mind sharing an update ?
> Hi,
> as Steinar has already pointed out, you can see the daily stats on my
> web site at <http://fud.no/ipv6>.  There hasn't been too many things
> going on since spring, but I can try to sum up some key points:
> - Brokenness percentage is currently at slightly above 0.05%.  This is
> unfortunately considered by my customers participating in the experiment
> as too high to deploy dual-stack, especially as there currently are no
> Norwegian ISPs that provides IPv6 to end users.
> - As I noted in the last post to the list, Opera fixed their web browser
> in March.  This had a very positive impact on the brokenness, which is
> very clearly visible in the graphs.  At the moment there's so few users
> of older broken Opera versions that the brokenness they cause is barely
> distinguishable from statistical noise.
> - Mac OS X is currently the biggest contributor to the brokenness, by
> far.  The brokenness percentage drops by 70-80% when disregarding all
> hits from Mac OS X.  As I've noted earlier, a fix for this is likely to
> be included in OS X 10.6.5 which is currently available in beta
> versions.  I doubt, however, that (close to) all OS X related brokenness
> will vanish overnight - there are still many users of OS X 10.4 and 10.5
> out there who won't be able to install the update.
> Nevertheless I'm certain that the release of 10.6.5 will have a positive
> impact, and it will be exciting to see exactly how large.
> - The brokenness decreased significantly during the summer months.
> One explanation for this is that the publicly run student dormitories
> tends to empty out then, and they are the single largest network
> contributor to the brokenness issue (currently accounting for about 35%)
> as they discard all 6to4 traffic in their firewalls, thus exacerbating
> the OS X/Opera problems significantly.  Several other enterprises and
> governmental networks do the same thing, but the student village network
> is much larger (in terms of end-user count) than any other 6to4-hostile
> network in Norway at the moment.
> That's all I could think of right now...
> Best regards,
> -- 
> Tore Anderson
> Redpill Linpro AS - http://www.redpill-linpro.com/
> Tel: +47 21 54 41 27

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