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?