Jason Edelman comments on his blog:
In my previous post about Docker, I focused on an introduction to networking with Docker. That post had a fair amount of traction mainly due to it being #dockercon the week it was published, and seemingly, people had an interest in learning more about it. Following the post, there were a few folks (@hartley and others) that pointed me to some great links about more advanced concepts in Docker and a site that validated what I was speculating with leveraging overlay tunnels as means for connectivity between nodes running Docker.
Jason has some great thoughts on workload mobility with Docker.
Read more at: Dock Dock. Who’s there?