title: Is it possible to isolate docker container in user-defined overlay network from outside internet?
body: <p>With new network feature in docker 1.10 it is possible to create isolated overlay networks - which works very well. Containers in 2 separate networks can not talk to each other. Is it possible, however, to deny container in overlay network to reach public internet? Eg to make ping 8.8.8.8 fail, while having docker host connected to internet.</p>