https://github.com/theforeman/foreman/pull/1537 "Fix instance where a domain id is indicated, but no hostname is given ...The model was asking the proxy to try and create a record that looks like ".domain.com", and if you were trying to create a second host with the same characteristics (blank hostname, domain name non-nil) on its interface, the proxy would properly fail with a "Entity already exists" error."
Created from redmine issue http://projects.theforeman.org/issues/6374
Moving to POST since upstream bug http://projects.theforeman.org/issues/6374 has been closed
This was delivered with Satellite 6.0 which was released on 10 September 2014.