The contact point network entity determines (808) contact point information associated with the first uplink of the network device, from the registry request message. For example, as described above with respect to FIG. 2, in some implementations, a registry request message includes two or more portions, where each respective portion of the registry request message has a different read and/or write privilege. In this example, the private contact point information of the first uplink of the network device is written to one portion of the registry request message and the public contact point information is written to another portion. In some implementations, determining the contact point information of the first uplink of the network device includes reading the first registry request message, identifying a device identifier corresponding to the first network device, identifying an uplink identifier corresponding to the first uplink and correlating contact point information in the first registry message associated with the device identifier for the network device and uplink identifier for the first uplink.
