Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE

[Justin Wilson <lists () mtin net>]

1.0.0.0/8 was assigned to APNIC in 2010.  Those who used it as a placeholder were doing it wrong.  It is valid IP 
space. It just was not assigned until 2010.


Justin Wilson
j2sw () mtin net

www.mtin.net
www.midwest-ix.com

> On Apr 2, 2018, at 11:05 AM, Matt Hoppes <mattlists () rivervalleyinternet net> wrote:
>
> Seeing as how 1.1.1.1 isn’t suppose to be routed I’m not surprised this is causing odd issues. 
>
> > On Apr 2, 2018, at 11:03, Darin Steffl <darin.steffl () mnwifi com> wrote:
> >
> > I am behind a Calix router at home for my ISP and 1.1.1.1 goes to my router
> > and not any further. When I enter the IP into my browser, it opens the
> > login page for my router. So it appears 1.1.1.1 is used as a loopback in my
> > Calix router.
> >
> > 1.0.0.1 goes to the proper place fine.
> >
> > On Sun, Apr 1, 2018 at 3:59 PM, Jeremy L. Gaddis <lists-nanog () gadd is>
> > wrote:
> >
> > > Greetings,
> > >
> > > If anyone at 7018 wants to pass a message along to the correct folks,
> > > please let them know that Cloudflare's new public DNS service (1.1.1.1)
> > > is completely unusable for at least some of AT&T's customers.
> > >
> > > There is apparently a bug with some CPE (including the 5268AC). From
> > > behind such CPE, the services at 1.1.1.1 are completely unreachable,
> > > whether via (ICMP) ping, DNS, or HTTPS.
> > >
> > > Using the 5268AC's web-based diagnostic tools, pinging 1.1.1.1 returns
> > > the following results:
> > >
> > > ping successful: icmp seq:0, time=2.364 ms
> > > ping successful: icmp seq:1, time=1.085 ms
> > > ping successful: icmp seq:2, time=1.160 ms
> > > ping successful: icmp seq:3, time=1.245 ms
> > > ping successful: icmp seq:4, time=0.739 ms
> > >
> > > RTTs to the CPE's default gateway are, at minimum, ~20 ms.
> > >
> > > A traceroute (using the same web-based diagnostic tool built-in to the
> > > CPE) reports, simply:
> > >
> > > traceroute 1.1.1.1 with: 64 bytes of data
> > >
> > > 1: 1.1.1.1(1dot1dot1dot1.cloudflare-dns.com), time=0 ms
> > >
> > > I haven't bothered to report this to AT&T through the standard customer
> > > support channels (for reasons that should be obvious to anyone who has
> > > ever called AT&T's consumer/residential technical support) but if anyone
> > > at AT&T wants to pass the info along to the appropriate group, it would
> > > certainly be appreciated.
> > >
> > > Thanks,
> > > -Jeremy
> > >
> > > --
> > > Jeremy L. Gaddis
> > >
> > >
> > > "The total budget at all receivers for solving senders' problems is
> > > $0. If you want them to accept your mail and manage it the way you
> > > want, send it the way the spec says to."  --John Levine
> >
> >
> > -- 
> > Darin Steffl
> > Minnesota WiFi
> > www.mnwifi.com
> > 507-634-WiFi
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> > <http://www.facebook.com/minnesotawifi>