https://bugzilla.redhat.com/show_bug.cgi?id=1090071
--- Comment #2 from Matthew Heon mheon@redhat.com --- This is not a regression, but a deliberate change by upstream - https://github.com/dotcloud/docker/commit/a03f83e3370f3859ebff172d504cc29817....
Given the confusion, potentially a documentation issue here - perhaps this should be clarified in the docker start help info.