Introduction In the open source docker engine a new networking model was introduced in docker 1.9 which enabled the creation of separate "networks" for containers to be attached to. This, however, can lead to a nasty little problem where a port that is supposed to be exposed on the host isn't accessible from the outside. There are a few bug reports that are related to this issue. Cause This problem happens because docker wires up all of these containers to each other and the various "networks...
