Method and apparatus for selecting a gateway node

An apparatus for selecting a gateway node for a terminal which connects to its registered domain via an access domain and, in a predetermined scenario, an intermediate domain, the access domain having an associated domain name system which is arranged to return an address of a gateway node based on a domain name system query sent to it, and the apparatus comprising at least one component arranged to use a first part of such a domain name system query to identify the registered domain of the terminal to the domain name system and a second part of the domain name system query to indicate to the domain name system that it should use a predetermined mapping to return the address of a gateway node based on the domain name system query, the predetermined mapping being one which returns an address of a gateway node either in the registered domain V or in an intermediate domain based on the registered domain identified in the domain name system query and on the access domain.

A non-transitory computer-readable medium having computer instructions stored therein, which when executed by a processor, cause the processor to perform operations comprising:

• selecting a gateway node for a terminal which connects to its registered domain via an access domain and, in a predetermined scenario, an intermediate domain, the access domain having an associated domain name system which is arranged to return an address of a gateway node based on a domain name system query sent to it;
• and
• using a first part of such a domain name system query to identify the registered domain of the terminal to the domain name system and a second part of the domain name system query to indicate to the domain name system that it should use a predetermined mapping to return an address of a gateway node based on the domain name system query, the predetermined mapping being one which returns an address of a gateway node either in the register domain or in an intermediate domain based on the registered domain identified in the domain name system query and on the access domain.