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

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

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
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