> That's how it's supposed to work.

According to who?

It could fit best practices if your datacenter has one tenant and they want to put the entire thing on a single subnet? In general I would expect a datacenter to get something like a /48 minimum. Even home connections are supposed to get more than /64 allocated.

And Linode's default setup only gives each server a single /128. That's not how it's supposed to work. But you can request /64 or /56.