In accordance with an example embodiment of the present invention, there is provided an apparatus, comprising a receiver configured to receive a data packet, at least one processing core configured to determine, based on contents of the data packet, a new destination address for the packet, wherein the received data packet does not comprise the new destination address in a header field, the at least one processing core being configured to insert the new destination address into a destination address header field of the data packet, and a transmitter configured to cause the data packet to be transmitted after the new destination address has been inserted. In some embodiments, the new destination address is determined on the basis of a compression context used to compress the data packet.