google ipv6 routes via cogent

Sat Feb 25 15:49:56 UTC 2017

Hi, I'm new to the nanog list, hope this isn't out of scope for what is
usually discussed here.

Cogent is telling me that I can't route through cogent to get to google ipv6
routes (particularly the well known dns addresses 2001:4860:4860::88xx)
because google decided not to advertise those route to one of their mutual
peers.

Anyone know anything about this ?  .and why it happened and when it will be
resolved ?

-Aaron