In accordance with the example embodiments of the Invention there is at least a method and apparatus to detect that at least one message received from another network device of a communication network is in response to a prior message using a spoofed source address; based on the detecting, mirror the at least one message; and send to the another network device the mirrored at least one message to cause the another network device to filter out the at least one message in response to the prior message using the spoofed address. Further, there is at least a method and apparatus to receive from a network node signaling associated with at least one message; based on the signaling, detect that the at least one message is in response to a prior message using a spoofed source address; and based on the detecting, filter out the at least one message in response to the prior message using the spoofed source address.