Some feedback on this one@websquadza hi, please, ongoing now for months. I know it's back and forth with NTT, but for the past week, I believe we're waiting for info from your team?
it seems we have two problem prefixes:
Vodafone (/19) and NTT (/12)
Now for some reason, both are advertising their prefixes to our upstreams in Frankfurt via De-CIX and New York, but not London. Add to that the fact that upstreams in Lisbon (other end of Equiano) have direct peering to Frankfurt, we see where the hairpin happens.
The NTT allocation seems to be an EU assignment used in multiple countries, advertised as a single /12 (which is huge) and making selecting London as an entry point a potential issue.
We've logged tickets with our upstreams to see if they can try pick these up in London.