From owner-freebsd-ipfw@freebsd.org Wed Nov 6 15:50:08 2019 Return-Path: Delivered-To: freebsd-ipfw@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 920F41B92B2 for ; Wed, 6 Nov 2019 15:50:08 +0000 (UTC) (envelope-from marco@tols.org) Received: from tolstoy.tols.org (tolstoy-a1.tols.org [IPv6:2a02:898:57:3::1]) (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 477WFW5FBCz4H91 for ; Wed, 6 Nov 2019 15:50:07 +0000 (UTC) (envelope-from marco@tols.org) Received: from [2001:67c:64:42:a528:fc6d:b285:435f] by tolstoy.tols.org with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92.3 (FreeBSD)) (envelope-from ) id 1iSNZH-000Nhg-4L; Wed, 06 Nov 2019 16:49:59 +0100 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 13.0 \(3601.0.10\)) Subject: Re: nat64lsn first hop in traceroute has a source ip of the final host From: Marco van Tol In-Reply-To: Date: Wed, 6 Nov 2019 16:49:57 +0100 Cc: Marco van Tol , freebsd-ipfw@freebsd.org Content-Transfer-Encoding: quoted-printable Message-Id: References: <898BCDF8-EA5C-49C1-B159-7FCEEBD47B4F@tols.org> To: "Andrey V. Elsukov" X-Mailer: Apple Mail (2.3601.0.10) X-Tolsorg-Spam-Score: -1.0 (-) X-Rspamd-Queue-Id: 477WFW5FBCz4H91 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of marco@tols.org designates 2a02:898:57:3::1 as permitted sender) smtp.mailfrom=marco@tols.org X-Spamd-Result: default: False [-3.51 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; R_SPF_ALLOW(-0.20)[+a:tolstoy-a1.tols.org]; MV_CASE(0.50)[]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[tols.org]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; IP_SCORE(-1.71)[ipnet: 2a02:898::/32(-4.79), asn: 8283(-3.78), country: NL(0.02)]; FREEMAIL_TO(0.00)[yandex.ru]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:8283, ipnet:2a02:898::/32, country:NL]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-ipfw@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: IPFW Technical Discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Nov 2019 15:50:08 -0000 Op 6 nov. 2019, om 16:45 heeft Andrey V. Elsukov het = volgende geschreven: > On 25.10.2019 17:57, Marco van Tol wrote: >> This all works great in that the guests have no IPv4 any more, and in >> their point of view the entire world has migrated to IPv6-only. >>=20 >> Is there a way to change this behaviour so that traceroutes to >> synthesized addresses also report to be coming from the router IP on >> the first hop? >>=20 >> Thank you very much in advance! >=20 > Hi, >=20 > I think I know where is the problem, I'll try to make the patch at the > weekend. Cool! Thank you very much, this is much appreciated! I can add that today I upgraded the box from FreeBSD 11.3 to FreeBSD = 12.1. The final result was the same after that. The box is currently on binary updates, but if you have a custom = ipfw_nat64 module I can load I'll happily test it! Thanks! --=20 Marco van Tol