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The Internet is becoming increasingly mobile, with not only smartphones outnumbering stationary hosts, but also cars, buses, trains and airplanes all coming online. This makes Internet mobility support more important than ever. However the existing standard mobility support protocols, mainly Mobile IPv6 and Network Mobility (NEMO), suffer from triangle routing problem. In this paper we present a new mobility support protocol called SAIL that provides an effective and efficient solution to the triangle routing problem while being completely compatible with Mobile IP. SAIL is built upon the Global HAHA protocol which uses multiple distributed home agents to minimizes triangle routing, but removes its high overhead by one-hop DHT. We evaluate the SAIL design through extensive simulations and our results show that SAIL can provide superior performance over Mobile IP while keeping the overhead low.