A method of facilitating location update signalling within a communication network between a mobile node and an end host includes establishing a trust relationship between one or more end hosts (1) and a proxy (3). When a mobile node (2) is handed-off, a location update is performed between the mobile node (2) and the proxy (3), and a location update message is sent from the proxy to the end host(s) having the trust relationship with the proxy. Multiple end hosts may authorise the same proxy to perform location update signalling on their behalf. The number of signalling messages required to perform the location update may be reduced, compared to a legacy method in which the mobile node is required to perform location update signalling with each end host.