A method for operating a flow control entity which is configured to control a data packet flow in a network in which at least one virtualized gateway and at least one other gateway exchange routing data is disclosed. The flow control entity receives a message from a node located in an interconnection used by the at least one virtualized gateway and the at least one other gateway to exchange routing data by which one the gateways informs the other of the gateways about new routes and withdrawn routes for data packet flows which traverse the at least one virtualized gateway and the at least one other gateway, extracts the routing data from the received message, translates the extracted routing data into routing information, and transmits the routing information to an infrastructure managing entity configured to manage a virtualized infrastructure of the network.