Hello stackers! In OpenStack documentation and specifically on Legacy Networking http://docs.openstack.org/juno/install-guide/install/yum/content/ch_basic_environment.html#basics-networking-nova says clearly that for a two node installation the interface dedicated to the external network should not be configured with an IP address. Is this correct?? Furthermore at the "Verify Connectivity" part is pinging successfully on the external network and my question is how is this happening? Does it assume that there is a third interface already connected on the external network?? How is accessing the external network without even configuring the interface dedicated at it?? Does it assume that the internal network somehow performs a routing?? Best regards, G.