A node (114, 116, 118; 214, 216, 218; 601) for managing test traffic for a subscriber connection made of one or more unidirectional tunnels responsible for encapsulating and carrying the forward and reverse user data traffic to its destination over one or more networks, said node comprising: a processor configured to execute computer instructions and a memory (604, 606, 616, 618, 620) configured to store said computer instructions wherein said computer instructions further comprise: an enhanced decapsulator component configured to decapuslate test packet requests received, by said node (114, 116, 118; 214, 216, 218; 601), from another node, wherein the enhanced decapsulator component is configured to extract a tunnel header from said test packet request for processing; an enhanced encapsulator component configured to encapsulate test packet requests for transmission, from said node (114, 116; 214, 216; 601), towards another node; and a proxy test packet responder (106; 206) configured to generate a test packet reply for each test packet request addressed to the subscriber connection and identified for interception by the node (114, 116, 118; 214, 216, 218; 601), whereby a test packet request is identified for interception by the node if the extracted tunnel header indicates the node as being the destination of the test packet request; and a mapping component configured to direct said test packet request to a destination based on said tunnel header, wherein said destination is said enhanced encapsulator component or said proxy test traffic responder (106; 206). an enhanced decapsulator component configured to decapuslate test packet requests received, by said node (114, 116, 118; 214, 216, 218; 601), from another node, wherein the enhanced decapsulator component is configured to extract a tunnel header from said test packet request for processing; an enhanced encapsulator component configured to encapsulate test packet requests for transmission, from said node (114, 116; 214, 216; 601), towards another node; and a proxy test packet responder (106; 206) configured to generate a test packet reply for each test packet request addressed to the subscriber connection and identified for interception by the node (114, 116, 118; 214, 216, 218; 601), whereby a test packet request is identified for interception by the node if the extracted tunnel header indicates the node as being the destination of the test packet request; and an enhanced encapsulator component configured to encapsulate test packet requests for transmission, from said node (114, 116; 214, 216; 601), towards another node; and a proxy test packet responder (106; 206) configured to generate a test packet reply for each test packet request addressed to the subscriber connection and identified for interception by the node (114, 116, 118; 214, 216, 218; 601), whereby a test packet request is identified for interception by the node if the extracted tunnel header indicates the node as being the destination of the test packet request; and a mapping component configured to direct said test packet request to a destination based on said tunnel header, wherein said destination is said enhanced encapsulator component or said proxy test traffic responder (106; 206).