Re: 9.9.9.9 not taking DNS traffic over PCH through DE-CIX in Dallas

["Eric C. Miller via NANOG" <nanog () lists nanog org>]

Email sent. Thank you for quick response!

Eric

________________________________
From: John Todd <jtodd () quad9 net>
Sent: Friday, August 15, 2025 12:15 PM
To: North American Network Operators Group <nanog () lists nanog org>
Cc: Eric C. Miller <eric () ericheather com>
Subject: Re: 9.9.9.9 not taking DNS traffic over PCH through DE-CIX in Dallas


On 15 Aug 2025, at 9:00, Eric C. Miller via NANOG wrote:

> A mouthful, but we're seeing an issue where we can ping 9.9.9.9 but not get response to UDP/53 dns queries. Filtering 
> the prefix 9.9.9.0/24 and taking transports seems to run fine. We're also seeing TCP Resets on SecureDNS.
>
> Anyone else seeing something similar?
>
> Eric

Hi Eric -
  Can you please send a full set of debugging to support () quad9 net and we'll take a look. Please include source IP, 
a traceroute when you have that path active, and exact timeframes of the issue.

JT

--
John Todd - jtodd () quad9 net - +41 44 527 99 23
Chief Technology Officer - Quad9 Recursive Resolver

_______________________________________________
NANOG mailing list 
https://lists.nanog.org/archives/list/nanog () lists nanog org/message/UANT3H5X64IVVZ6DDZWW3BINLMLC645X/