From owner-freebsd-stable@FreeBSD.ORG Wed Sep 22 20:01:50 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5D02B1065672 for ; Wed, 22 Sep 2010 20:01:50 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from asmtpout026.mac.com (asmtpout026.mac.com [17.148.16.101]) by mx1.freebsd.org (Postfix) with ESMTP id 44E358FC1F for ; Wed, 22 Sep 2010 20:01:50 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=us-ascii Received: from cswiger1.apple.com ([17.209.4.71]) by asmtp026.mac.com (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTPSA id <0L9500HCTWV0IV10@asmtp026.mac.com> for freebsd-stable@freebsd.org; Wed, 22 Sep 2010 12:01:49 -0700 (PDT) X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx engine=6.0.2-1004200000 definitions=main-1009220163 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.0.10011,1.0.148,0.0.0000 definitions=2010-09-22_09:2010-09-22, 2010-09-22, 1970-01-01 signatures=0 From: Chuck Swiger In-reply-to: <20100921193101.GA95238@night.db.net> Date: Wed, 22 Sep 2010 12:01:48 -0700 Message-id: <9FF55FD3-4168-471B-A7C1-2D23880F3091@mac.com> References: <4C98F433.6070506@FreeBSD.org> <20100921191517.AF60A1CC3D@ptavv.es.net> <20100921193101.GA95238@night.db.net> To: Diane Bruce X-Mailer: Apple Mail (2.1081) Cc: "freebsd-stable@freebsd.org List" Subject: Re: BIND9 built w/--disable-ipv6 on 8.1-STABLE X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Sep 2010 20:01:50 -0000 Hi-- On Sep 21, 2010, at 12:31 PM, Diane Bruce wrote: [ ... ] >> Doug Barton wrote: >> 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. Well, I can't understand illogic either, but it's not too hard to obtain data about the issue and make rational decisions about IPv6 vs. IPv4 networking. :-) http://www.ripe.net/ripe/meetings/ripe-57/presentations/Colitti-Global_IPv6_statistics_-_Measuring_the_current_state_of_IPv6_for_ordinary_users_.7gzD.pdf Quoting from page 5: "* 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" Approximately 2 or 3 users per thousand prefer IPv6, and approximately 38% of these IPv6 users have broken connectivity, as of [2008]. Regards, -- -Chuck PS: Taken from a NetBSD thread here: http://mail-index.netbsd.org/tech-net/2009/12/04/msg001762.html