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Date:	Thu, 16 Nov 2023 10:18:58 +0000
To:	Martin Wege <martin DOT l DOT wege AT gmail DOT com>, cygwin AT cygwin DOT com
Subject:	Re: Please support download setup-x86_64.exe on IPv6-only network
Message-ID:	<20231116101858.vxbvtipwtvwucwjs@lucy.dinwoodie.org>
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From:	Adam Dinwoodie via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Adam Dinwoodie <adam AT dinwoodie DOT org>
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On Thu, Nov 16, 2023 at 08:13:30AM +0100, Martin Wege via Cygwin wrote:
> On Thu, Nov 16, 2023 at 2:40 AM Bin W via Cygwin <cygwin AT cygwin DOT com> wrote:
> >
> > https://www.cygwin.com/setup-x86_64.exe
> > IPv6-only network can't download the installer.
> 
> Details please. Does
> https://www.cygwin.com/setup-x86_64.exe
> not work on an IPv6-only network?
> 
> Or can setup-x86_64.exe not download data on an IPv6 network?

I've just checked: cygwin.com and www.cygwin.com only have DNS A
records, no AAAA records, so there's no way to get the installer (or
indeed anything else) from cygwin.com if you're on an IPv6-only network.

Fixing this will require setting up the web servers for cygwin.com to be
accessible over IPv6, and configuring the corresponding IPv6 addresses
in the domain's DNS records.

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