From owner-freebsd-questions@freebsd.org Fri Jun 2 19:46:21 2017 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 4E71FAFA57D for ; Fri, 2 Jun 2017 19:46:21 +0000 (UTC) (envelope-from byrnejb@harte-lyne.ca) Received: from inet08.hamilton.harte-lyne.ca (inet08.hamilton.harte-lyne.ca [216.185.71.28]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "inet08.hamilton.harte-lyne.ca", Issuer "CA_HLL_ISSUER_2016" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 08399752C9 for ; Fri, 2 Jun 2017 19:46:20 +0000 (UTC) (envelope-from byrnejb@harte-lyne.ca) Received: from localhost (localhost [127.0.0.1]) by inet08.hamilton.harte-lyne.ca (Postfix) with ESMTP id 1128062082 for ; Fri, 2 Jun 2017 15:46:19 -0400 (EDT) X-Virus-Scanned: amavisd-new at harte-lyne.ca Received: from inet08.hamilton.harte-lyne.ca ([127.0.0.1]) by localhost (inet08.hamilton.harte-lyne.ca [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id piivQ8utu4KW for ; Fri, 2 Jun 2017 15:46:17 -0400 (EDT) Received: from inet07.hamilton.harte-lyne.ca (inet07.hamilton.harte-lyne.ca [216.185.71.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "imap.hamilton.harte-lyne.ca", Issuer "CA HLL ISSUER 01" (not verified)) by inet08.hamilton.harte-lyne.ca (Postfix) with ESMTPS for ; Fri, 2 Jun 2017 15:46:17 -0400 (EDT) Received: from inet08.hamilton.harte-lyne.ca (inet08.hamilton.harte-lyne.ca [216.185.71.28]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "inet08.hamilton.harte-lyne.ca", Issuer "CA_HLL_ISSUER_2016" (verified OK)) by inet07.hamilton.harte-lyne.ca (Postfix) with ESMTPS id CD6788A541 for ; Fri, 2 Jun 2017 15:46:16 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by inet08.hamilton.harte-lyne.ca (Postfix) with ESMTP id B0EF862087 for ; Fri, 2 Jun 2017 15:46:16 -0400 (EDT) X-Virus-Scanned: amavisd-new at harte-lyne.ca Received: from inet08.hamilton.harte-lyne.ca ([127.0.0.1]) by localhost (inet08.hamilton.harte-lyne.ca [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hmgTK8zuCsCC; Fri, 2 Jun 2017 15:46:15 -0400 (EDT) Received: from webmail.harte-lyne.ca (inet04.hamilton.harte-lyne.ca [216.185.71.24]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by inet08.hamilton.harte-lyne.ca (Postfix) with ESMTPSA id 7BD7C62082; Fri, 2 Jun 2017 15:46:14 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=harte-lyne.ca; s=dkim_hll; t=1496432774; bh=V6xWQshznb5J3xWEsv8SuyYGBT+lbmBO3H3jUodDII0=; h=In-Reply-To:References:Date:Subject:From:To:Cc:Reply-To; b=arr2vh+Dg0B56tJCMh2eYZtkD3cXNtaLthoiHv+oQciWHrg6zaahklv6KSm+xD+Hx HwneMTh7gnP73oKMv9Zh/+HzKnbRIRHtyxOZl6isecnDj4TIP9gG6UXhJDqd+R9VdX XmzrYK5KLKeoR59dKm3b/eCy3PH2J93JqK2xvQB1km+GjwhDwbShZpQHTg7d6KA5Bo 7zAr2ZV8GJ6qEAQzteNVbw83tc+sdmmnFFaFJyF2CSGaH1bSlIRAJDmYp/WpnQ4d9+ pZHSHWCYN2y8Z7qWxBijlviggiL55n+iJ8UqJ8y8RBuBerjVKjift1bb3OP5uDsq8X IXFyfnjjS+1ig== Received: from 216.185.71.44 (SquirrelMail authenticated user byrnejb_hll) by webmail.harte-lyne.ca with HTTP; Fri, 2 Jun 2017 15:46:14 -0400 Message-ID: In-Reply-To: <691d853e-e2f7-b5f3-d281-73511845bd6a@radel.com> References: <74b7b58aa45cc01585338ef2270ccc57.squirrel@webmail.harte-lyne.ca> <691d853e-e2f7-b5f3-d281-73511845bd6a@radel.com> Date: Fri, 2 Jun 2017 15:46:14 -0400 Subject: Re: IPv4 to IPv6 From: "James B. Byrne" To: "Jon Radel" Cc: freebsd-questions@harte-lyne.ca Reply-To: byrnejb@harte-lyne.ca User-Agent: SquirrelMail/1.4.22-4.el6 MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Jun 2017 19:46:21 -0000 On Fri, June 2, 2017 11:43, Jon Radel wrote: > Do you really plan to remove IPv4 from everything other than your SMTP > and DNS servers? If so, how will your users [assuming you have such] > reach resources on the IPv4 Internet? Or have I misunderstood? > > An orderly migration to being dual-stacked on everything would > probably be a lot less painful than what I think you're planning. > While there are possible mechanisms for an IPv6-only client to > reach resources on the IPv4 Internet, I'm unclear on the benefits > of bothering with such an architecture. > We will be running dual stack for a while, possibly into the next century. Internally we will move to IPv6 as equipment is replaced or reconfigured. There seems little point in disturbing that which already works. Externally, the first services to be IPv6 enabled will be DNS followed closely by SMTP. Then we will start looking at SSH and VPN. Finally, we will enable HTTP services on IPv6. It still strikes me as odd that the ITEF managed to come up with a replacement addressing scheme that is not zero configuration compatible with the existing IPv4 one. -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3