[194594] in North American Network Operators' Group
Re: Question to Google
daemon@ATHENA.MIT.EDU (Stephane Bortzmeyer)
Mon May 15 08:44:03 2017
X-Original-To: nanog@nanog.org
Date: Mon, 15 May 2017 14:43:59 +0200
From: Stephane Bortzmeyer <bortzmeyer@nic.fr>
To: Mark Andrews <marka@isc.org>
In-Reply-To: <20170515123052.661246EB8DD9@rock.dv.isc.org>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
> Unfortunately, every time we've looked at the data, the
> conclusion has been that it would cause unwarranted user
> impact. IIRC the most recent blocker was a major US ISP whose
> clients would experience breakage if even just one NS record
> was dual-stacked.
There are many zones (including your isc.org) that have several name
servers dual-stacked, and they didn't notice a problem. Furthermore,
since the DNS is a tree, resolution of google.com requires a proper
resolution of the root and .com, both having IPv6 name servers.
So, this answer is at least insufficient.
