Huawei Technologies France S.A.S.U. Huawei Technologies Duesseldorf GmbH This document specifies an extension to the IPv6 Neighbor Discovery in Low Power and Lossy Networks (LLNs), enabling a node to request to be assigned an address or a prefix from neighbor routers, without introducing a centralized infrastructure and without relying on multicast messages. Such a mechanism makes it possible to algorithmically assign addresses and prefixes to nodes in a 6LoWPAN deployment. The proposed mechanism is more efficient in such specific scenario with respect to DHCPv6.