This is basically a billing feature, so that you can use "free" internal networking capacity instead of metered external networking usage. They are just followi

This is basically a billing feature, so that you can use "free" internal networking capacity instead of metered external networking usage. They are just following what Linode and other VPS providers do. I think part of the problem is that people confuse DO, who just rent out cheap boxes, with more "full service" cloud providers. DO is partly to blame because they keep marketing themselves as a cloud platform when really they're yet another company who rents out servers with a few extra features.