Upon receipt of the above information, the sixth node may transmit data packets using the above first routing identification information and/or the first source address information and/or the first destination address information, which were transmitted by using the above second routing identification information and/or the second source address information and/or the second destination address information prior to receipt of the above information, and upon receipt of the above new information, the sixth node then uses the above-mentioned first related information for data packet transmission.
Steps 2a-4 may be preceded by steps 2a-4a, wherein the sixth node sends a first configuration update request message to the second node, the message serves to provide the second node with information used for data packet transmission, the message including at least one of the following information: