Cloudflare 1.1.1.1 public DNS broken w/ AT&T CPE

Marty Strong marty at cloudflare.com
Tue Apr 3 06:37:15 UTC 2018


Orange France is known, they just didn’t tell us the exact reason.

They said that if you contact them, they’ll provide you with an official explanation.

Regards,
Marty Strong
--------------------------------------
Cloudflare - AS13335
Network Engineer
marty at cloudflare.com
+44 7584 906 055
smartflare (Skype)

https://www.peeringdb.com/asn/13335

> On 3 Apr 2018, at 07:22, Paul Rolland (ポール・ロラン) <rol at witbe.net> wrote:
> 
> Hello,
> 
> On Mon, 2 Apr 2018 16:26:13 +0100
> Marty Strong via NANOG <nanog at nanog.org> wrote:
> 
>> So far we know about a few CPEs which answer for 1.1.1.1 themselves:
>> 
>> - Pace 5268
>> - Calix GigaCenter
>> - Various Cisco Wifi access points
>> 
>> If you know of others please send them my way so we can investigate. 
> 
> It seems that in France, Orange's Livebox is also using 1.1.1.1 is some
> way...
> 
> 215 [6:20] rol at riri:~> traceroute 1.1.1.1
> traceroute to 1.1.1.1 (1.1.1.1), 30 hops max, 60 byte packets
> 1  * * *
> 2  * * *
> 3  * * *
> 4  * * *
> 
> 216 [6:20] rol at riri:~> ping 1.1.1.1
> PING 1.1.1.1 (1.1.1.1) 56(84) bytes of data.
> 64 bytes from 1.1.1.1: icmp_seq=1 ttl=64 time=0.371 ms
> 64 bytes from 1.1.1.1: icmp_seq=2 ttl=64 time=0.292 ms
> ^C
> --- 1.1.1.1 ping statistics ---
> 2 packets transmitted, 2 received, 0% packet loss, time 1037ms
> rtt min/avg/max/mdev = 0.292/0.331/0.371/0.043 ms
> 
> 217 [6:20] rol at riri:~> traceroute 8.8.8.8
> traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets
> 1  livebox.home (192.168.1.254)  0.268 ms  0.236 ms  0.263 ms
> 2  * * *
> 3  ae102-0.ncidf103.Puteaux.francetelecom.net (193.253.80.138)  1.724 ms  1.733 ms  1.793 ms
> ...
> 
> That IP address is definitely full of magic...
> 
> Paul
> 
> 



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