[Users] Connecting to portals through ip and consoles

Hello, I'm verifying this behavior with an oVirt 3.2 beta in all-in-one config if the client doesn't know the hostname of engine and uses instead its ip to connect to webadmin portal or user portal, the gui works, but then when it connects to a spice console of a VM it receives the error of unable to connect to connet to graphics server as soon as I put engine entry hostname ip in /etc/hosts of a fedora 17 client it can now connect to spice console. Is this expected behavior? Any workaround (other than hosts one I tested) in case of lab/test environment when no dns feasible? Thanks Gianluca