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I am still a little confused. Is CoreOS designed to be used inside a container, or as a host OS to other containers?

CoreOS is like dom0 and your containers are domUs. Shared kernel, but LXC for isolation.

We need a better way to explain this...

Reusing the VM terminology "host" and "guest" would have made it clear for me.

Does it include a zero-copy network driver?

Optionally, by giving the container direct access to the nic. Docker will do more iptables/veth-pair magic, but if you need direct access you can use other methods. We like systemd-nspawn, since it integrates nicely with systemd.

Off topic, but what are the pros of going this route instead of bare metal or virtual machines?

Don't get me wrong, it's cool to see some innovation in this space..

These made me a little bot wiser :) http://en.wikipedia.org/wiki/LXC http://en.wikipedia.org/wiki/Docker_%28Linux_container_engin...

A host OS.

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