ElabInElab fix: Remove use of control_iface in iptonodeid (the initial
query that maps the peer IP to a node in the DB). This was primarily used as a safety to make sure that the node_types entry really did match (in case the luser picked experimental addresses that conflicted with real testbed addresses?), but not sure this test really mattered. But, just to be safe, I changed it so that we check for a matching IP and role='ctrl'.