A pull model IPv6 Duplicate Address Detection

In IPv6 network, before configuring any address, a node must perform Duplicate Address Detection (DAD) to ensure the address is unique on link. However, original DAD is unreliable and vulnerable. In this article, a pull model DAD is designed, which achieves improvements both in reliability and security through changing the solicitation model. Comparing with SEcure Neighbor Discovery (SEND), this proposal has advantage in lightweight overhead and flexibility of address generation. Through evaluation, it is found to be feasible and cost effective.