On a related note, I recently noticed Google became reachable again over IPv6 from Cogent (I didn't have any automated testing in place so this can well have happened long ago - last posts I can find about the issue are from mid-2020).
It's apparently through Tata/6453 so looks like they figured it out. Does anyone have context on when / how this was done? Can't find anything on the internet!
From Cogent's LG:
6453 15169
2001:550:0:1000::261c:143 (metric 102020) from
2001:550:0:1000::261c:153 (38.28.1.67)
Origin IGP, metric 4294967294, localpref 100, valid,
internal, best, group-best
Received Path ID 0, Local Path ID 1, version 175370
Community: 174:11401 174:20666 174:21100 174:22005
Originator: 38.28.1.67, Cluster list: 38.28.1.83
Matt,
Why would HE hijack Cogent's IP space? That would end in a lawsuit and potentially even more de-peering between them.
Ryan Hamel
From: NANOG <nanog-bounces+ryan=rkhtech.org@nanog.org> on behalf of Matt Corallo <nanog@as397444.net>
Sent: Monday, November 13, 2023 11:32 AM
To: Bryan Fields <Bryan@bryanfields.net>; nanog@nanog.org <nanog@nanog.org>
Subject: Re: Am I the only one who thinks this is disconcerting?Caution: This is an external email and may be malicious. Please take care when clicking links or opening attachments.
On 11/8/23 2:23 PM, Bryan Fields wrote:
> On 11/8/23 2:25 PM, owen@Delong.com wrote:
>> Seems irresponsible to me that a root-server (or other critical DNS provider) would engage in a
>> peering war to the exclusion of workable DNS.
>
> I've brought this up before and the root servers are not really an IANA function IIRC. There's not
> much governance over them, other than what's on root-servers.org. I think a case could be made that
> C is in violation of the polices on that page and RFC 7720 section 3.
>
> Basically none of the root servers want to change this and thus it's never going to change. DNS
> will fail and select another to talk to, and things will still work.
At what point does HE just host a second C root and announce the same IPv6s? Might irritate Cogent,
but its not more "bad" than Cogent failing to uphold the requirements for running a root server.
Matt
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