From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from omta001.cacentral1.a.cloudfilter.net (omta001.cacentral1.a.cloudfilter.net [3.97.99.32]) by sourceware.org (Postfix) with ESMTPS id 251F53858D35 for ; Tue, 21 Nov 2023 05:35:40 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 251F53858D35 Authentication-Results: sourceware.org; dmarc=fail (p=none dis=none) header.from=Shaw.ca Authentication-Results: sourceware.org; spf=fail smtp.mailfrom=shaw.ca ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 251F53858D35 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=3.97.99.32 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1700544941; cv=none; b=lIKLyOk+IGh3is6qDeavEq9EWY7HvgdhTj9udT1dsJLBlhZlY6VL8MedULzoto0zC3KUGAUr5/76DBIP3FWEmsvSCPpT32mTtB5iRmlGMvihLcNl+oHGUGPzymXzjaWhG8lQFXekHNukSLBLd+e0u4decHn9bf83VUvwWqxQ1Lo= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1700544941; c=relaxed/simple; bh=sx4FTL15Ymx1xDDlllUjxLjcvdEzLXS3Jgm2Ldn5CCY=; h=DKIM-Signature:Message-ID:Date:MIME-Version:Subject:To:From; b=rE31qcsLqHNeBMmPn3Ga6fiHysrh2+o6vGcX6fLJQiE3o6Nv/zBjndYQbeFRqtiOhFcG7uExgsc2F/4FLnFG0d5f4O1s0W+AFcUcYt5YsHO5Ip7U30YOxd3S8//gvyI932ZeksLOln22bBvpi3XzfC1ZrhyVgHuLW1HA7KLqVCo= ARC-Authentication-Results: i=1; server2.sourceware.org Received: from shw-obgw-4001a.ext.cloudfilter.net ([10.228.9.142]) by cmsmtp with ESMTPS id 5F5orlwaP8jpT5JQBrswvj; Tue, 21 Nov 2023 05:35:39 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=shaw.ca; s=s20180605; t=1700544939; bh=sx4FTL15Ymx1xDDlllUjxLjcvdEzLXS3Jgm2Ldn5CCY=; h=Date:Reply-To:Subject:To:References:From:In-Reply-To; b=kwiQaG/Lt1offdyJHqwVXh9aonsal9nTVC0yp+y4FTLaIzJVXIWhjaxMosQyjEDGE qoen19ywGCq+YICy+OOPWIFG6K9DCEh8ubV5bIGFnRTV6wzaESuO0vNE3uxZJT96J7 HOhB7jX8jV6x3rqAHPmjK66FCzJhezrQjXEQ6pCqRTvdD1tXRAUrL1ZttqlcUViNl8 11V0rj4v+fFCSrIRtoZURVi1PtvXfquvu0hzVjgAO9ad+bREUHQd73KgqFJe4cIoGQ vpHtKn9J/FIh3h1iYEwfB0LPrsBFubs+5LOdUp5CvEJAMidInZQJxdISRxPG6Jd5RY JKoDMK8QSNJNA== Received: from [10.0.0.5] ([184.64.102.149]) by cmsmtp with ESMTP id 5JQBrz5LRU5YW5JQBr7vkK; Tue, 21 Nov 2023 05:35:39 +0000 X-Authority-Analysis: v=2.4 cv=CZQbWZnl c=1 sm=1 tr=0 ts=655c41ab a=DxHlV3/gbUaP7LOF0QAmaA==:117 a=DxHlV3/gbUaP7LOF0QAmaA==:17 a=IkcTkHD0fZMA:10 a=BqEg4_3jAAAA:8 a=EfKubs0AG1NhwE_uHWUA:9 a=QEXdDO2ut3YA:10 a=0mFWnFbQd5xWBqmg7tTt:22 Message-ID: Date: Mon, 20 Nov 2023 22:35:38 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Reply-To: cygwin@cygwin.com Subject: Re: Please support download setup-x86_64.exe on IPv6-only network Content-Language: en-CA To: cygwin@cygwin.com References: <20231116101858.vxbvtipwtvwucwjs@lucy.dinwoodie.org> <635d3f94-f104-49e0-9248-1cace4da9fa6@Shaw.ca> From: Brian Inglis Organization: Inglis In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-CMAE-Envelope: MS4xfLDly0vMwpHn0X6DwVugt/II51KtQZRibSWUORN4cMohV5lnMf+t9hiitpImZpeMObkdAwwvC25pnjYYVmYPAgHnZyfPS4z2l3EZQXnwVJlQ+GD01mcs eGb0eb6AfGhbv6OrfYb30cTbUbkosyBm9N2XIIkcUpLk6v/INmkwBivHcNTb6XCR0YV5UyDD068Ppg== X-Spam-Status: No, score=-3.3 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,TXREP,T_SCC_BODY_TEXT_LINE,T_SPF_PERMERROR autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On 2023-11-20 17:45, Lee via Cygwin wrote: > On Mon, Nov 20, 2023 at 7:13 PM Backwoods BC via Cygwin wrote: >> >> On Thu, Nov 16, 2023 at 12:41 PM Brian Inglis via Cygwin wrote: >>> The whole IP v4 internet is available as a compatibility subnet ::ffff:0:a.b.c.d >>> on IP v6, so there is no excuse for not supporting interconnection, as it will >>> be required until the last backbone routers drop IP v4 support. >> >> Just a small correction for the mail archives as this appears solved. >> The correct IPV6 address for the IPV4 address range is >> ::ffff:a.b.c.d (no '0') > > If you're going for correcting the record, let's make it correct. > ::ffff:a.b.c.d is not a solution for IPv6 => IPv4 interconnection over > the Internet. > > from: https://www.rfc-editor.org/rfc/rfc5156 > > 2.2. IPv4-Mapped Addresses > > ::FFFF:0:0/96 are the IPv4-mapped addresses [RFC4291]. Addresses > within this block should not appear on the public Internet. These internal addresses are used by dual stack hosts to allow clients or servers to handle connections to IPv4 hosts the same as IPv6 hosts. Whereas ::ffff:0:0:0/96 == ::ffff:0:a.b.c.d allows IPv6 only hosts without assigned IPv4 addresses to connect to IPv4 only hosts via SIIT see: https://www.rfc-editor.org/rfc/rfc7915 Stateless IP/ICMP Translation. -- Take care. Thanks, Brian Inglis Calgary, Alberta, Canada La perfection est atteinte Perfection is achieved non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut -- Antoine de Saint-Exupéry