DoD IP Space

William Herrin bill at
Mon Feb 15 16:47:57 UTC 2021

On Mon, Feb 15, 2021 at 7:49 AM Valdis Klētnieks
<valdis.kletnieks at> wrote:
> On Sun, 14 Feb 2021 22:25:56 -0800, William Herrin said:
> > This particular problem could be quickly resolved if the OSes still
> > getting updates were updated to default name resolution to prioritize
> > the IPv4 addresses instead. That would allow broken IPv6
> > configurations to exist without breaking the user's entire Internet
> > experience. Which would allow them to leave it turned on so that it
> > resumes working when the error is eventually found and fixed.
> Oh, come on Bill.  This ain't your first rodeo.  You know damned well
> that if we do that, the errors are in fact *not* eventually found and fixed.

I don't know that and neither do you. That remains an untested theory.
What I do know, with the perfection of 20/20 hindsight, is that
v6-first has impeded deployment for two decades by routinely giving
folks a reason to turn IPv6 back off.

Hard headed.

Bill Herrin

William Herrin
bill at

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