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Current mobility management approaches are highly centralized and hierarchical. They make use of centralized anchors located in core networks, responsible for forwarding traffic to/from mobile nodes' location. Emerging networks standards developed for new broadband cellular radio interfaces are use flat architecture where control functions are deployed in network edges such as evolved base stations. In order to better fit to such distributed logic while optimizing handover efficiency and minimizing traffic encapsulation, we propose a new scheme designed for mobility management in flat architectures. Our scheme dynamically anchors mobile nodes' traffic in access nodes, depending on their location when sessions are set up. A first estimation shows that we can obtain low handover delays, promising for future adoption and development of our distributed and dynamic approach.