comcast ipv6 PTR

Tue Oct 15 15:18:11 UTC 2013

Brielle Bruns <bruns at 2mbit.com> writes:

> Sent from my iPhone
>
> On Oct 15, 2013, at 8:59 AM, Bjørn Mork <bjorn at mork.no> wrote:
>
>> Doug Barton <dougb at dougbarton.us> writes:
>>> On 10/14/2013 07:47 PM, John Levine wrote:
>>>> Doing rDNS on random hosts in IPv6 would be very hard.
>>> 
>>> *    PTR    generic.reverse.record.isp.net.
>>> 
>>> can we move on now?
>> 
>> Sure. If you can explain how that is going to resolve forward.
>
> Wildcard A records like have been done forever (even if not exactly recommended)?

Maybe.  Personally I put a lot more trust into an IPv6 address with no
PTR than an IPv6 address with a PTR not resolving back to the same
address.

Bjørn