Cogent and Google no longer peered via IPv6

Adam Rothschild asr at
Wed May 4 22:32:39 CEST 2011

On Wed, May 4, 2011 at 1:05 PM, David Freedman
<david.freedman at> wrote:
> Well, that will won't bode well for single homed Cogent customers on World
> IPv6 day, Even if Cogent can send the ICMPv6 unreachable and the customer
> doesn't filter it on the way back, I wonder how many stacks will notice
> and provide the user a good experience with Google page loads.

If somebody could work up an accurate list of these customers, we'd be
happy to raise issue from a commercial prospective.  I don't think
Cogent's management fully understands the absurdity of the


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