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 <[email protected]> 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
