[166261] in North American Network Operators' Group
Re: comcast ipv6 PTR
daemon@ATHENA.MIT.EDU (joel jaeggli)
Tue Oct 15 12:48:20 2013
From: joel jaeggli <joelja@bogus.com>
In-Reply-To: <alpine.BSF.2.00.1310151010530.89737@joyce.lan>
Date: Tue, 15 Oct 2013 09:46:32 -0700
To: "John R. Levine" <johnl@iecc.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On Oct 15, 2013, at 7:26 AM, John R. Levine <johnl@iecc.com> wrote:
>> Actually you just need to *let* the hosts update their own ptr
>> records using UPDATE.
>=20
I don't think that any host out there should be updating the PTR record =
associated with the privacy address it's using for outgoing connections. =
if the provider the prefix is delgated to respond with a genric RR well =
fine. but I doubt very much that there would be any circumstances where =
you'd want hosts doing PTR updates for addresses they're only using =
because their slaac address is a form of information leakage.
> Um, Mark, forward records too.
>=20
> And I have to say the idea of delegating rDNS for 50 million consumers =
to 50 million consumer something or others is simultaneously pretty =
amusing and pretty horrifying.
>=20
> My cable company assigns me a different prefix every time the modem =
reboots, about once a month, and I think that's pretty typical.
>=20
> R's,
> John
>=20
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