nanog mailing list archives

Re: Anybody can participate in the IETF (Was: Why is IPv6 broken?)


From: Mark Andrews <marka () isc org>
Date: Thu, 14 Jul 2011 14:16:56 +1000


In message <430FFF20-43ED-45BB-846D-FEE8769FC399 () bogus com>, Joel Jaeggli write
s:

On Jul 12, 2011, at 10:59 PM, Mark Andrews wrote:
=20
I didn't claim it would work with existing CPE equipment.  Declaring
6to4 historic won't work with existing CPE equipment either.

If the hosts behind it stop using 2002::/16  addresses as a product of a =
software update which seems rather more likely (also there some evidence =
for that), it will. that said yes one assumption is that you have to =
continue to support it.

When you switch the source address preference from 2002::/16 to
IPv4 you loose insight into which machines have 2002::/16 addresses
still without explict testing.

<snip>

It is really hard to justify the expansion and deployment of new =
relays =3D
when in fact tunneled traffic can be observed to be on the decline =3D
(possibly because devices particularly hosts that do receive regular =
=3D
updates receive tweaks to their address selection algorithm).
=3D
=
http://asert.arbornetworks.com/2011/04/six-months-six-providers-and-ipv6/
=20
Which may or may not be a short term dip.

correlation is not causation but...

=
http://arstechnica.com/apple/news/2010/11/apple-fixes-broken-ipv6-by-break=
ing-it-some-more.ars

 We are yet to see much in the
way of IPv6 only content.  When that appears, which it will, the =
tunneled
traffic will go up unless ISPs have deployed native IPv6 to all =
customers.
Are you willing to bet on which will happen first?

I'm willing to bet that subpar experience due to auto-tunneling is =
considered a liability for content providers.

This whole area is in a state of flux.
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka () isc org


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