[outages] Google 8.8.8.8 Resolution of Route53 domains

[Phil Lavin]

Thanks for confirming. I’ve raised a ticket with HE on our circuit. I presume nobody has a contact at 10297?

From: Outages <outages-bounces at outages.org> On Behalf Of Joseph B via Outages
Sent: 24 April 2018 13:56
To: outages at outages.org
Subject: Re: [outages] Google 8.8.8.8 Resolution of Route53 domains


Tue Apr 24 11:05:41 UTC onwards one of Hurricane Electric's peers AS10297 started advertising the following subnets via HE.

205.251.192.0
205.251.193.0
205.251.195.0
205.251.197.0
205.251.199.0

These are all Amazon subnets, usually originated as part of /23s and seemingly host a fair bit of AWS Route53.

If you (or your DNS resolver) are a HE transit customer you will be impacted the most.

Cheers,

Joseph


On Tue, Apr 24, 2018, at 9:50 PM, Phil Lavin via Outages wrote:

This doesn’t feel right, though I’ll admit I’ve never checked before. Our only route to ns-163.awsdns-20.com (205.251.192.163) is through HE:

inet.0: 757581 destinations, 2107440 routes (757301 active, 0 holddown, 522 hidden)

+ = Active Route, - = Last Active, * = Both

205.251.192.0/24   *[BGP/170] 01:12:08, localpref 70

                      AS path: 6939 10297 I, validation-state: unverified

                    > to 216.66.90.21 via ge-1/0/5.0

AS10297 is eNET inc. Is this expected?



From: Outages <outages-bounces at outages.org<mailto:outages-bounces at outages.org>> On Behalf Of Phil Lavin via Outages
Sent: 24 April 2018 13:04
To: outages at outages.org<mailto:outages at outages.org>
Subject: Re: [outages] Google 8.8.8.8 Resolution of Route53 domains



Looks more specific to AWS than it does to Google+AWS. Can’t resolve against some of AWS’s NS directly:

phil at phil-debian:~$ dig cloudcall.com IN A @ns-163.awsdns-20.com

; <<>> DiG 9.10.3-P4-Debian <<>> cloudcall.com IN A @ns-163.awsdns-20.com

;; global options: +cmd

;; connection timed out; no servers could be reached



From: Outages <outages-bounces at outages.org<mailto:outages-bounces at outages.org>> On Behalf Of Phil Lavin via Outages
Sent: 24 April 2018 12:56
To: outages at outages.org<mailto:outages at outages.org>
Subject: Re: [outages] Google 8.8.8.8 Resolution of Route53 domains



Yeh. Still digging into it.



From: Outages <outages-bounces at outages.org<mailto:outages-bounces at outages.org>> On Behalf Of Zach Hanna via Outages
Sent: 24 April 2018 12:54
To: outages at outages.org<mailto:outages at outages.org>
Subject: [outages] Google 8.8.8.8 Resolution of Route53 domains



Anyone else seeing SERVFAIL for route53-hosted domains trying to resolve with Google DNS?
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