Re: www.RT.com bad dns record

[Ca By <cb.list6 () gmail com>]

On Thursday, July 7, 2016, Spencer Ryan <sryan () arbor net> wrote:

> Dotted-quad notation is completely valid, and works fine.
>
> https://en.wikipedia.org/wiki/IPv6_address#Presentation
>
> http://[::ffff:37.48.108.112] loads fine in my browsers.
>
>
> Spencer,

It may be legit on your network, but people generally don't do that.... If
they publish a aaaa record, it usually has a legit v6 address in it.

That said, what they have done breaks in dns64 networks. This could be a
real downer for them in the near future if they dont remove this aaaa. I am
sending this mail in attempt to head of impending disruptions for www.rt.com
for some subset of users.

And www.rt.com is one of only two sites in the alexa top 25,000 websites to
do this thing.

http://www.employees.org/~dwing/aaaa-stats/ipv6-map.2016-07-07_0800.txt

So, again, it would be great if www.rt.com could remove the aaaa.

CB


> *Spencer Ryan* | Senior Systems Administrator | sryan () arbor net
> <javascript:_e(%7B%7D,'cvml','sryan () arbor net');>
> *Arbor Networks*
> +1.734.794.5033 (d) | +1.734.846.2053 (m)
> www.arbornetworks.com
>
> On Thu, Jul 7, 2016 at 7:25 PM, Ca By <cb.list6 () gmail com
> <javascript:_e(%7B%7D,'cvml','cb.list6 () gmail com');>> wrote:
>
> > Anyone have a contact at www.rt.com that can encourage them to to delete
> > their bad aaaa ?
> >
> > Some users on some devices fail to reach www.rt.com due to this dns
> > failure. I know about various work arounds, looking for RT.com to fix this
> > by deleting the bad aaaa record.
> >
> > Shared from ISC Dig for iOS
> >
> > ; <<>> DiG 9.10.4 <<>> @fe80::4c60:deff:fee6:b019 @192.168.1.1 www.rt.com
> > aaaa
> > +sit +dnssec +noqr +multiline
> > ; (1 server found)
> > ;; global options: +cmd
> > ;; Got answer:
> > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4367
> > ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
> >
> > ;; OPT PSEUDOSECTION:
> > ; EDNS: version: 0, flags: do; udp: 512
> > ;; QUESTION SECTION:
> > ;www.rt.com.            IN AAAA
> >
> > ;; ANSWER SECTION:
> > www.rt.com.             10 IN AAAA ::ffff:37.48.108.112
> >
> >
> > ;; Query time: 298 msec
> > ;; SERVER: 192.168.1.1#53(192.168.1.1)
> > ;; WHEN: Wed Jul 06 20:19:34 PDT 2016
> > ;; MSG SIZE  rcvd: 67
Does not work for on iOS