[166248] in North American Network Operators' Group
Re: comcast ipv6 PTR
daemon@ATHENA.MIT.EDU (Brielle Bruns)
Tue Oct 15 10:52:47 2013
In-Reply-To: <20131015132001.GA15703@cmadams.net>
From: Brielle Bruns <bruns@2mbit.com>
Date: Tue, 15 Oct 2013 08:51:12 -0600
To: Chris Adams <cma@cmadams.net>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Sent from my iPhone so be gentle about formatting errors.
On Oct 15, 2013, at 7:20 AM, Chris Adams <cma@cmadams.net> wrote:
> Once upon a time, Blair Trosper <blair.trosper@gmail.com> said:
>> That gets to the core of the original question. I figured there must be a=
>> reason for the conscious omission. However, I've noticed also that Comca=
st
>> hasn't bothered to give PTR to their routers, either.
>=20
> I have a Comcast residential circuit with IPv6, and I see reverse DNS
> for router hops past the first device.
> --=20
CenturyLink offers 6rd to both residential customers and business, but no wa=
y to set RDNS on the individual /64 or /48s assigned to each static ipv4 add=
ress the customer has. Rather huge omission, IMHO.
I got bit by this bad when !$@& google started outright rejecting email from=
ipv6 addresses with no RDNS.
Yay exim for allowing me to tag broken remote smtp servers to only use ipv4.=
Brielle=
