Device mobility with coap

A method performed in a network server, the method comprising:

• sending Constrained Application Protocol (CoAP) signalling to a network connected endpoint device having a first address as its current address, the CoAP signalling comprising an Observe request for an information resource of the endpoint device, said resource comprising the current address of the endpoint device stored therein;
• and
• in accordance with the sent signalling comprising the Observe request, receiving CoAP signalling from the endpoint device, the signalling from fee endpoint device comprising information about the current address of the endpoint device stored in the resource.

A non-transitory computer readable storage medium having program code stored therein, which when executed on processor circuitry, cause a network connected endpoint device having a first address as its current address to perform operations comprising:

• receiving Constrained Application Protocol (CoAP) signalling from a network server, the CoAP signalling comprising an Observe request for an information resource of the endpoint device, said resource comprising the current address of the endpoint device stored therein;
• and
• in accordance with the received CoAP singalling comprising the Observe request, sending CoAP signalling to the network server, the CoAP signalling to the network server comprising information about the current address of the endpoint device stored in the resource.

A non-transitory computer readable storage medium having program code stored therein, which when executed on processor circuitry, cause a network server to perform operations comprising:

• sending Constrained Application Protocol (CoAP) signalling to a network connected endpoint device having a first address as its current address, the CoAP singalling comprising an Observer request for an information resource of the endpoint device, said resource comprising the current address of the endpoint device stored therein;
• and
• in accordance with the sent signalling comprising the Observer request, receiving CoAP signalling from the endpoint device, the signalling from the endpoint device comprising information about the current address of the endpoint device stored in the resource.

16-18. (canceled)