Date: Wed, 22 Sep 2010 22:01:41 +0100 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: Chuck Swiger <cswiger@mac.com> Cc: Diane Bruce <db@db.net>, "freebsd-stable@freebsd.org List" <freebsd-stable@freebsd.org> Subject: Re: BIND9 built w/--disable-ipv6 on 8.1-STABLE Message-ID: <4C9A6EB5.1060607@infracaninophile.co.uk> In-Reply-To: <9FF55FD3-4168-471B-A7C1-2D23880F3091@mac.com> References: <4C98F433.6070506@FreeBSD.org> <20100921191517.AF60A1CC3D@ptavv.es.net> <20100921193101.GA95238@night.db.net> <9FF55FD3-4168-471B-A7C1-2D23880F3091@mac.com>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig3E06FE072A08C097C37B8C0A Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 22/09/2010 20:01:48, Chuck Swiger wrote: > Hi-- >=20 > On Sep 21, 2010, at 12:31 PM, Diane Bruce wrote: > [ ... ] >>> Doug Barton <dougb@FreeBSD.org> wrote: >=20 >>> If I'm still alive when IPv6 is the norm and IPv4 is the exception, I= >>> promise to give it another look. :) >> >> IPv6 is more prevalent than you think. I can't understand the illogic = of turning it off. >=20 > Well, I can't understand illogic either, but it's not too hard to obtai= n data about the issue and make rational decisions about IPv6 vs. IPv4 ne= tworking. :-) >=20 > http://www.ripe.net/ripe/meetings/ripe-57/presentations/Colitti-Global_= IPv6_statistics_-_Measuring_the_current_state_of_IPv6_for_ordinary_users_= =2E7gzD.pdf >=20 > Quoting from page 5: >=20 > "* 0.238% of users have useful IPv6 connectivity (and prefer IPv6) > * 0.09% of users have broken IPv6 connectivity > That is, adding an AAAA record will make these users unable to view = your site" >=20 > Approximately 2 or 3 users per thousand prefer IPv6, and approximately = 38% of these IPv6 users have broken connectivity, as of [2008]. >=20 Yeah. "Ordinary" users won't like and don't generally use IPv6 because it is *still* virtually impossible to get consumer-grade items like WiFi and ADSL routers with IPv6 capability. Apple equipment (AirPort, etc) is an honourable exception. This is really a travesty, and something that manufacturers should be being browbeaten about at every possible opportunity. To counter: IPv6 is not some vague far future thing any more. The IANA pool of unallocated IPv4 address space is forecast to run out in May of next year. The unallocated pools held by Regional Internet Registries (RIPE, ARIN, APNIC and so forth) will run out in January 2012. Note: these numbers don't even try and account for attempts to obtain and hoard address space once it becomes really scarce, something that will probably cause address space exhaustion rather sooner than the current predictions. http://www.potaroo.net/tools/ipv4/index.html After that, there are some legacy /8 network assignments from the very early days of the Internet which are under-used and should be broken up. Then it's down to haggling over dribs and drabs of IPv4 space as they are released back to the registries as part of normal turn-over. If you haven't got hold of all the IPv4 address space you are ever going to need within the next 15 months or so, then you are S.O.L. Honestly, any company that relies on the Internet for their business and that does not by now have at least a well-developed IPv6 implementation plan, urgently needs to fire their current IT management and hire someone with a clue. Cheers, Matthew --=20 Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate JID: matthew@infracaninophile.co.uk Kent, CT11 9PW --------------enig3E06FE072A08C097C37B8C0A Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.14 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkyabrwACgkQ8Mjk52CukIxBgACZAYocYXVuYYgQ5ILAuYXitaSa H+AAn0bvf9SKk5clj0ibl0jtXSlS9eZe =Pna8 -----END PGP SIGNATURE----- --------------enig3E06FE072A08C097C37B8C0A--
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