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The ID/locator split concept has recently been introduced in the standardization activities of ITU-T study group 13 for use in future networks. To contribute to ITU-T's initiative, we first propose a naming system to configure host-names and identifiers and map them to locators. We then propose a network architecture that is based on the ID/locator split concept and the naming system. The proposed architecture allows the network layer to change protocols and locators without disturbing the upper-layer communication sessions. This capability is helpful for designing efficient solutions for mobility, multi-homing, routing, and security as well as for integrating heterogeneous network layer protocols.