The present invention relates to a method for resolving hardware addresses into network addresses, which method comprising the steps of: establishing a data path through a data communication network between a source node and an end node, which data path being established by exchanging signaling messages between network nodes along said data path, which signaling exchanges relying upon control network addresses for addressing the network nodes, at the source node, sending a request whereby a particular hardware address associated with the data path is to be resolved into a network address. A method according to the invention further comprises the steps of: at the source node, encoding into the request a common path identifier whereby the data path can be identified, and sending the request with as destination network address a particular control network address of a particular network node along the data path, which request being further forwarded towards the end node, at the end node, identifying the data path from the common path identifier, determining whether the data path terminates at the end node, and returning to the source node a particular data network address associated with the data path. The present invention also relates to a network node implementing such a method.