IP addresses auto-configuration in global IP connectivity of mobile ad hoc networks

To form a spontaneous network, nodes in MANET have to obtain IP addresses by auto-configuration. When MANET connects to Internet, the requirement of "topology correct" should be added to the mechanism of auto-configuration. When auto-configuration comes to reality, network partitioning and merging should be paid more attention. Mechanism for this should not consume more resources either in networks or in hosts. This paper investigates the effect of the gateway on the algorithm of auto-configuration and provides solutions respectively. This paper also proposes a lightweight method for detecting network partitioning and merging which can reduce the cost caused by active methods present in literatures.