X-Recipient:	archive-cygwin AT delorie DOT com
DKIM-Filter:	OpenDKIM Filter v2.11.0 sourceware.org 32F31395C872
DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=cygwin.com;
	s=default; t=1589981897;
	bh=+7nBV/6PdaTXWaupEaTKsRs97+Ly/pOMIQTLg/ePKvk=;
	h=References:In-Reply-To:Date:Subject:To:List-Id:List-Unsubscribe:
	List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc:
	From;
	b=AF9c17548qoMWcKmdQ94oUCK+CoX4PyU7Bi+7rIqR0+GJP9LXq8VqsJum3E4PbUmN
	RhSS/fo8kZkKalxiGKqCA21jcehkOADLfArAehXlrs+qem8PyYKFGXVb8rK24KnjAH
	YoceLIMrR8MfGQ1Zmn3dDKZymaTPY5cGU3d3vv/A=
X-Original-To:	cygwin AT cygwin DOT com
Delivered-To:	cygwin AT cygwin DOT com
DMARC-Filter:	OpenDMARC Filter v1.3.2 sourceware.org 25346395C41A
X-Google-DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed;
	d=1e100.net; s=20161025;
	h=x-gm-message-state:mime-version:references:in-reply-to:from:date
	:message-id:subject:to:cc;
	bh=G4EaDql/a63qFC64mNuYkApNI4UNjtYs5rDm5+IIhSs=;
	b=WGQwPLUUBADruKvDbGbWDCziUqyHMPt1jwZcXpNrhro8rCpnH1wHXd1+s0BI3Rp9MJ
	VXq9Suipvb/zL/cKMwF/NNCR1mfFoqIs6WKt6zFkr38yCWSfnSdEYAgnS3fDjAxx3nvf
	3OsSLKDjbK5smMXCkX2Lflw9UCKli/D8lRKkKmlToS1R2aghXkyRxnFR8HnYiiSgoL3d
	ONUzZibncvNytGRWp8HUPS+4j0twnmWhL5ixKbvqUHGMB8Jcc2JhU69nhDnh5Vig+aP2
	92GiM3k3EOaoICwh5kjuWZWs1+2MKqzsrPkGXD0KvTYmWxmH1vLdw1qJqNQir9WOg7h4
	jzoA==
X-Gm-Message-State:	AOAM533y5xhtDV4jYuI8fKdOzqAAzKtmWx614QbmFq+7ZlKp8A9S2r3w
	hnYOnT1bgKqLrQc+C7T21FIOQ7s+riDbCzLFrv+A8Sb9
X-Google-Smtp-Source:	ABdhPJwFD4wzlCI78lgzkdZ555Bc2EDguEMxX4sOBDNLLCXFyzh5afNT7QvCAurYvWAnRu2sdHtGuzSR/rh4iDa+GAE=
X-Received:	by 2002:a05:6638:ca1:: with SMTP id
	x1mr4334806jad.86.1589981893365;
	Wed, 20 May 2020 06:38:13 -0700 (PDT)
MIME-Version:	1.0
References:	<CABTKjsz75FkcPzEeKfZLB59O-j42jYXH2SqX1jDd-vxUoQDAmg AT mail DOT gmail DOT com>
	<97e93adb-4782-40bc-d33c-00c27ed56b74 AT dronecode DOT org DOT uk>
	<CABTKjszwB9vXZKjKomaiovjGpPV+iK94gA_tazmHfWgKmftVow AT mail DOT gmail DOT com>
In-Reply-To:	<CABTKjszwB9vXZKjKomaiovjGpPV+iK94gA_tazmHfWgKmftVow@mail.gmail.com>
Date:	Wed, 20 May 2020 09:38:01 -0400
Message-ID:	<CABTKjsyrT7yz0Kdntxcd_mt0gGDCbdZV+fKLDfgv4jmAcZvxFw@mail.gmail.com>
Subject:	Re: www.cygwin.com DNS setup
To:	Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
X-Spam-Status:	No, score=-3.3 required=5.0 tests=BAYES_00, DKIM_SIGNED,
	DKIM_VALID, HTML_MESSAGE, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS,
	TVD_PH_BODY_ACCOUNTS_PRE, TXREP autolearn=ham autolearn_force=no version=3.4.2
X-Spam-Checker-Version:	SpamAssassin 3.4.2 (2018-09-13) on
	server2.sourceware.org
X-Content-Filtered-By:	Mailman/MimeDel 2.1.29
X-BeenThere:	cygwin AT cygwin DOT com
X-Mailman-Version:	2.1.29
List-Id:	General Cygwin discussions and problem reports <cygwin.cygwin.com>
List-Archive:	<https://cygwin.com/pipermail/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-request AT cygwin DOT com?subject=help>
List-Subscribe:	<http://cygwin.com/mailman/listinfo/cygwin>,
	<mailto:cygwin-request AT cygwin DOT com?subject=subscribe>
From:	Chad Kimes via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Chad Kimes <chkimes AT github DOT com>
Cc:	The Cygwin Mailing List <cygwin AT cygwin DOT com>
Sender:	"Cygwin" <cygwin-bounces AT cygwin DOT com>

Hi all - gentle ping here. I want to make sure Cygwin doesn't have any
issues with IPv6 connectivity after this change. Could you look into
suggesting the above AAAA record to the responsible team?

Thanks!
-Chad

On Fri, May 15, 2020 at 11:47 AM Chad Kimes <chkimes AT github DOT com> wrote:

> Thanks Jon!
>
> I see the change went through and I re-ran my validation script a few
> times and I don't see the error anymore, which is awesome.
>
> However, I believe my suggestions have inadvertently broken IPv6
> connectivity for www.cygwin.com! The CNAME accounts for both A and AAAA
> records, but only an A record was added after the CNAME was removed.
>
> To fix this, can you please suggest that the team add an AAAA record
> pointing to 2620:52:3:1:0:246e:9693:128c (the address for
> server2.sourceware.org)?
>
> Thanks,
> -Chad
>
> On Thu, May 14, 2020 at 12:31 PM Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
> wrote:
>
>> On 14/05/2020 16:54, Chad Kimes via Cygwin wrote:
>> > Hi all,
>> >
>> > I'm investigating an issue with GitHub Actions runners having issues
>> > connecting to www.cygwin.com:
>> > https://github.com/actions/virtual-environments/issues/698
>> >
>> > I worked with the Azure DNS team and in this comment
>> > <
>> https://github.com/actions/virtual-environments/issues/698#issuecomment-628284472
>> >
>> > I
>> > detail what we believe to be the likely issue. Summarized:
>> >
>> > www.cygwin.com is CNAME'd to server2.sourceware.org
>> > server2.sourceware.org is an NS server for sourceware.org
>> >
>> > We believe that the above configuration is triggering a bug in WinDNS
>> that
>> > is causing intermittent DNS resolution failures. I don't have an ETA for
>> > resolution from the Azure DNS team, and internally I'm translating that
>> to
>> > be on the order of months before we see a fix. In order to resolve this
>> > faster for customers, I'm reaching out to see what options we have for
>> > updating the DNS records that are triggering this bug.
>> >
>> > Is there a change you can make to either www.cygwin.com or
>> > server2.sourceware.org DNS such that it doesn't have this recursive
>> > reference issue? Some options are to replace the CNAME with an A
>> record, or
>> > to use something like ns2.sourceware.org for the NS record instead of
>> > server2.sourceware.org which is being used for cygwin's A record
>> reference.
>>
>> I have drawn the attention of sourceware overseers to this.
>>
>> They have requested the DNS change you suggest.
>>
>
--
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple

- Raw text -