A method for a gateway to select a channel for transferring data packets

A method for enabling a gateway node (12) of a first data network (10) packet switching, to select a first channel for transferring a data packet channeled a protocol address packet data destination, a service provided to mobile nodes (18) in the first network (10), the gateway node (12) configured to select the first channel from a plurality of channels each being for transferring data packets to the address protocol packet data destination mobile node (18), being executed the selection by matching the protocol address data packets associated with a data packet received by the gateway node (12), one or more data packet filters associated with the plurality of channels, the method being characterized by the steps of :: a) detecting a trigger event indicating that the gateway node is adapted to receive a paquetede channelized data via a tunneling node (48) of a second external data network to the packet switched first network (10); b) in response to the detection, configured for a first protocol address packet data to be included in a first filter data packets associated with the first channel, wherein the first protocol address packet data to associate with a data packet received by the gateway node (12), will be indicative that the data packet has been channeled through the tunneling node, wherein the first filter the data packet is for use node gateway (12) when the selection is made from the plurality of channels for transferring data packets to the mobile node (18) in the direction of protocol data packets destination.