[bdonlan]

Sure, but remember each /64 takes up space in their router's routing table. Assigning every linode a /64 would take up quite a lot of memory, then.

[danellis]

What you're saying implies that they have a single routing entry for all their /128s currently, otherwise that would be the same number of routing entries. So, why can't they just have a single routing entry that aggregates all the /64s?