nanog mailing list archives
Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE
From: Matt Hoppes <mattlists () rivervalleyinternet net>
Date: Mon, 2 Apr 2018 11:05:30 -0400
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 <http://www.facebook.com/minnesotawifi> Like us on Facebook <http://www.facebook.com/minnesotawifi>
Current thread:
- Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE Jeremy L. Gaddis (Apr 02)
- Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE Darin Steffl (Apr 02)
- Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE Matt Hoppes (Apr 02)
- Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE Chris Adams (Apr 02)
- Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE John Levine (Apr 02)
- Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE Simon Lockhart (Apr 02)
- Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE Seth Mattinen (Apr 02)
- Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE David Conrad (Apr 02)
- Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE Seth Mattinen (Apr 02)
- Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE Mark Andrews (Apr 02)
- Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE Seth Mattinen (Apr 02)
- Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE Matt Hoppes (Apr 02)
- Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE Darin Steffl (Apr 02)
- Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE nop (Apr 02)
- Re: Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE John R. Levine (Apr 02)