A method of accessing resources on a data network, the data network including a mobile node, a plurality of Mobile Access Gateways (15, 105) and a Local Mobility Anchor, the plurality of Mobile Access Gateways (15, 105) and the Local Mobility Anchor being arranged to provide an Internet Protocol network address for the mobile node in accordance with the Proxy Mobile Internet Protocol,, the method comprising: receiving a request at one of the Mobile Access Gateways (15, 105) from the mobile node for an Internet Protocol network address; sending a proxy binding update to the Local Mobility Anchor indicating a new network location for the mobile node in the data network; receiving an Internet Protocol network address to be allocated to the mobile node from the Local Mobility Anchor; allocating the received Internet Protocol network address to the mobile node; routing data packets received from other devices located on a wide area network, via a Proxy Mobile Internet Protocol tunnel between the Local Mobility Anchor to the mobile node; and routing data packets from the mobile node to other devices located on the wide area network, to the Local Mobility Anchor via the Proxy Mobile Internet Protocol tunnel, such that the mobile node can connect to different ones of the mobile access gateways (15, 105) while maintaining a consistent network address to other devices, characterised in that: one of the mobile access gateways (15, 105) is a home access point router located at the mobile node user's premises and configured to provide a home local area network, the home local area network including local area network devices being addressable within a private range of Internet Protocol network addresses; and wherein, when the mobile node is connected to said home access point router, further comprising: modifying a routing table of the home access point router to allow data packets to be exchanged directly over the local area network between the mobile node and local area network devices located on the home local area network without using the Proxy Mobile Internet Protocol tunnel. receiving a request at one of the Mobile Access Gateways (15, 105) from the mobile node for an Internet Protocol network address; sending a proxy binding update to the Local Mobility Anchor indicating a new network location for the mobile node in the data network; receiving an Internet Protocol network address to be allocated to the mobile node from the Local Mobility Anchor; allocating the received Internet Protocol network address to the mobile node; routing data packets received from other devices located on a wide area network, via a Proxy Mobile Internet Protocol tunnel between the Local Mobility Anchor to the mobile node; and routing data packets from the mobile node to other devices located on the wide area network, to the Local Mobility Anchor via the Proxy Mobile Internet Protocol tunnel, such that the mobile node can connect to different ones of the mobile access gateways (15, 105) while maintaining a consistent network address to other devices, characterised in that: one of the mobile access gateways (15, 105) is a home access point router located at the mobile node user's premises and configured to provide a home local area network, the home local area network including local area network devices being addressable within a private range of Internet Protocol network addresses; and wherein, when the mobile node is connected to said home access point router, further comprising: modifying a routing table of the home access point router to allow data packets to be exchanged directly over the local area network between the mobile node and local area network devices located on the home local area network without using the Proxy Mobile Internet Protocol tunnel. one of the mobile access gateways (15, 105) is a home access point router located at the mobile node user's premises and configured to provide a home local area network, the home local area network including local area network devices being addressable within a private range of Internet Protocol network addresses; and wherein, when the mobile node is connected to said home access point router, further comprising: modifying a routing table of the home access point router to allow data packets to be exchanged directly over the local area network between the mobile node and local area network devices located on the home local area network without using the Proxy Mobile Internet Protocol tunnel. modifying a routing table of the home access point router to allow data packets to be exchanged directly over the local area network between the mobile node and local area network devices located on the home local area network without using the Proxy Mobile Internet Protocol tunnel.