Cogent and Google no longer peered via IPv6

Frank Bulk frnkblk at
Tue May 3 05:44:52 CEST 2011

We get to via Sprint today, even though we are IPv6-peered
with Cogent and Qwest and have (had?) an HE tunnel as well.  I used RIPE's
bgplay and there was no indication of routing changes for Google's IPv6


-----Original Message-----
From: at
[ at] On Behalf Of
Phil Benchoff
Sent: Monday, May 02, 2011 7:27 PM
To: ipv6-ops at
Subject: Cogent and Google no longer peered via IPv6

As of Thursday 28 April at about noon (EDT) most of our  IPv6 inbound
shifted to our backup ISP.  A little digging shows that we are receiving no
routes from AS15169 (Google) via Cogent.  They are no longer peered via
No HE and no Google.  That somewhat limits the usefulness of our IPv6
connectivity via Cogent.

Anybody else notice this?


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