The IPv6 Travesty that is Cogent's refusal to peer Hurricane Electric - and how to solve it

Mon Jan 25 23:45:47 UTC 2016

Actually, where I have mostly seen the biggest problems with the Cogent remote BGP
hacks is when their forwarding decisions in between your router and their BGP
speaking router don’t actually deliver your packets to the BGP speaking router
and your traffic starts veering wildly off course to god knows where.

Likely they’ve gotten better at avoiding this over the years, but there were times
when it resulted in very interesting loops and very strange paths that often
did not ever reach the intended destination.

Worse, when you encountered one of these hairballs, finding someone at AS174 with
enough clue to understand your traceroutes let alone fix anything was an additional
challenge.

Owen