IPv6 Addressing Strategy for IoT Network: A Comprehensive Review

IPv6 addressing has become increasingly important with the rapid emergence of the Internet of Things (IoT) due to the depletion of IPv4 addresses. Allocating IPv6 in the IoT is challenging because of the large number of devices with limited resources and the requirement for efficient and scalable addressing schemes. This paper comprehensively surveys the various IPv6 addressing strategies for IoT networks.This paper discusses the various factors involved in assigning IPv6 addresses to IoT nodes, including spatial information and allocation processes. The authors provide a detailed overview of existing IPv6 address assignment methods and the different types of IPv6 addresses used in IoT networks.The survey presents a tabular evaluation of the various addressing schemes based on different metrics, including address success rate (ASR), energy consumption,spatial information, communication overhead, and nature of deployment. Additionally, the paper highlights the advantages and disadvantages of different addressing schemes and discusses their areas of applicability.Furthermore, the survey highlights future research directions for addressing IoT, such as developing lightweight address generation schemes and better and secure addressing schemes to mitigate DOS and reconnaissance attacks.It also highlights the need for continued research to address the challenges associated with addressing IoT nodes.