A router detects a network attack and forwards traffic associated with the network attack to a discard interface. The device includes a body member comprising a shape memory material, the body member configured to be placed at or near a base of a valve of a heart. Using a fully flexible valve actuator, the valve actuator module selectively adjusts closing timing of an exhaust valve in response to: the desired ignition mode transitioning from the HCCI mode to the SI mode; and the desired ignition mode transitioning from the SI mode to the HCCI mode. The method preferably involves at least three such painting applications separated by two to six, and preferably four, week intervals. Alternatively, if the first communication network is not available to deliver the communication to the multimodal endpoint, an attempt to complete the communication using the second communication network is initiated.