[withjive]

When working with Docker, it is possible to get down to the metal as you mentioned.

Usually by bypassing the docker networking and using Host only network, but then you lose a lot of the benefits of containers in the first place.

For example, weave or calico networking layer on top— which add a fair bit of latency if your aiming for 10M connections— makes scaling containers quite easy

I would imagine that if you plan on using Docker in your infrastructure seriously, you are aiming for a multi host setup with many containers spread throughout— and can settle for 100k connections per container easily.