In the referenced message, Sean Donelan said:

> perhaps better late than never... PAIX & LINX both
> have IPv6 capabilities at/on the exchange fabric(s).
> I am not aware that Equinix has taken that step.

Uhm, another dumb question.

Why does the operator of a layer 2 exchange care (or know) what
protocols your are using? IPv4, IPv6, heck I remember seeing
Appletalk, OSI and DECNET on MAE-EAST. What consenting network
operators do....

They probably only care on broadcast-based protocols, since is more
than the consenting networks. Might also include multicast, which could
then get you into the realm of pim snooping, which might then get
you up into the ipv4 and ipv6 arena.