From owner-freebsd-net@freebsd.org Tue Jun 25 09:40:18 2019 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C0D9015C68A7 for ; Tue, 25 Jun 2019 09:40:18 +0000 (UTC) (envelope-from crest@rlwinm.de) Received: from mail.rlwinm.de (mail.rlwinm.de [138.201.35.217]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 829E582907 for ; Tue, 25 Jun 2019 09:40:17 +0000 (UTC) (envelope-from crest@rlwinm.de) Received: from crest.bultmann.eu (unknown [IPv6:2a00:c380:c0d5:1:7513:b69b:92bf:757c]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.rlwinm.de (Postfix) with ESMTPSA id BFC20117B1 for ; Tue, 25 Jun 2019 09:40:09 +0000 (UTC) Subject: Re: IPv6-only network--is NAT64+DNS64 really this easy now? To: freebsd-net@freebsd.org References: <5e24739b-bbd0-d94a-5b0e-53fdeba81245@bluerosetech.com> <19784363-6543-ccc1-b13f-5f1a67dc10d1@bluerosetech.com> From: Jan Bramkamp Message-ID: <7082e1ef-e9f6-b7d1-c90e-d84f834f4f57@rlwinm.de> Date: Tue, 25 Jun 2019 11:40:09 +0200 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <19784363-6543-ccc1-b13f-5f1a67dc10d1@bluerosetech.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-Rspamd-Queue-Id: 829E582907 X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; spf=pass (mx1.freebsd.org: domain of crest@rlwinm.de designates 138.201.35.217 as permitted sender) smtp.mailfrom=crest@rlwinm.de X-Spamd-Result: default: False [-1.28 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; NEURAL_HAM_MEDIUM(-0.98)[-0.982,0]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-net@freebsd.org]; TO_DN_NONE(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-1.00)[-0.996,0]; MIME_TRACE(0.00)[0:+]; NEURAL_SPAM_SHORT(0.25)[0.253,0]; MX_GOOD(-0.01)[mail.rlwinm.de]; DMARC_NA(0.00)[rlwinm.de]; IP_SCORE(-0.25)[ipnet: 138.201.0.0/16(0.58), asn: 24940(-1.82), country: DE(-0.01)]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; SUBJECT_ENDS_QUESTION(1.00)[]; ASN(0.00)[asn:24940, ipnet:138.201.0.0/16, country:DE]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 25 Jun 2019 09:40:18 -0000 On 25.06.19 04:47, Mel Pilgrim wrote: > On 2019-06-24 19:33, Ultima wrote: >> Hello Mel, >> >>   While it may be possible to have an IPv6 only environment, I don't >> think it is really viable. There are simply too many things that >> don't run >> on or have very limited support for IPv6 that it makes it very hard >> to drop IPv4 altogether and until something comes along forcing the >> move it likely won't happen for at least another decade at the minimum. > > Yes, that is why I wrote "Waving a hand at bug-hunting and > lamentations over the inertia of embedded systems designers". > > This a lab experiment specifically to iron out the very wrinkles you > just stated. In that case the answer is yes. At least Github, Stack Overflow and Twitter work just fine on IPv6 only clients as long as you provide NAT64 and DNS64.