A terminal apparatus, comprising: a plurality of interfaces (110, 111); a memory for storing flow information including (i) flow identification information indicating a list of traffic flows that are to be transmitted or received by a trusted access network only, and (ii) network identification information indicating a list of trusted access networks; and circuitry coupled to the memory and adapted for controlling a process including: receiving a trigger from a first interface of the plurality of interfaces (110, 111), said trigger indicating that the first interface is moving to a new access network; determining, based on the stored flow information, whether a traffic flow transmitted or received by the first interface is to be transmitted or received by a trusted access network only; if said traffic flow is to be transmitted or received by a trusted access network only, determining (S43, S44), based on an identifier of the new access network and the stored flow information, whether the new access network is a trusted network; and if the new access network is not determined to be a trusted network, identifying a second access network connected to a second interface of the plurality of interfaces (110, 111) different from the first interface as an access network for routing said traffic flow in case the flow information includes the network identification information identifying the second access network as a trusted access network; and moving said traffic flow from a source access network connected to the first interface to the identified second access network connected to the second interface. a plurality of interfaces (110, 111); a memory for storing flow information including (i) flow identification information indicating a list of traffic flows that are to be transmitted or received by a trusted access network only, and (ii) network identification information indicating a list of trusted access networks; and circuitry coupled to the memory and adapted for controlling a process including: receiving a trigger from a first interface of the plurality of interfaces (110, 111), said trigger indicating that the first interface is moving to a new access network; determining, based on the stored flow information, whether a traffic flow transmitted or received by the first interface is to be transmitted or received by a trusted access network only; if said traffic flow is to be transmitted or received by a trusted access network only, determining (S43, S44), based on an identifier of the new access network and the stored flow information, whether the new access network is a trusted network; and if the new access network is not determined to be a trusted network, identifying a second access network connected to a second interface of the plurality of interfaces (110, 111) different from the first interface as an access network for routing said traffic flow in case the flow information includes the network identification information identifying the second access network as a trusted access network; and moving said traffic flow from a source access network connected to the first interface to the identified second access network connected to the second interface. receiving a trigger from a first interface of the plurality of interfaces (110, 111), said trigger indicating that the first interface is moving to a new access network; determining, based on the stored flow information, whether a traffic flow transmitted or received by the first interface is to be transmitted or received by a trusted access network only; if said traffic flow is to be transmitted or received by a trusted access network only, determining (S43, S44), based on an identifier of the new access network and the stored flow information, whether the new access network is a trusted network; and if the new access network is not determined to be a trusted network, identifying a second access network connected to a second interface of the plurality of interfaces (110, 111) different from the first interface as an access network for routing said traffic flow in case the flow information includes the network identification information identifying the second access network as a trusted access network; and moving said traffic flow from a source access network connected to the first interface to the identified second access network connected to the second interface.