Question $4[25$ marks$]$

$4\mathrm{.}1$ You are giving a presentation at a conference for aspiring network engineers and technicians, where one of the topics is network addressing. During your presentation, you mention IPv$4$ and IPv$6$ addresses. An aspiring technician asks for more information about these two versions of IP addressing. Provide an explanation justifying the adoption of IPv$6$ and the migration from IPv$4.[16$ marks$]$

$4\mathrm{.}2$ Innov$8$ Research is a market research organisation that installs numerous Internet of Things $($IoT$)$ devices in retail shops nationwide. The devices collect various types of data to provide insights into customer behaviour, preferences, and shopping patterns. These IoT devices are equipped with sensors$,$ cameras, and other real$-$time data$-$gathering technologies that capture relevant information. Due to the expanding number of devices that connect to their network, Innov$8$ Research has since migrated from Internet Protocol version $4($IPv$4)$ to implement Internet Protocol version $6($IPv$6).$ Given the number of devices they manage, the nature of the data they handle, and the network they operate, it is essential for them to enhance their IPv$6$ network as it provides dynamic routing capabilities, allowing routers to exchange routing information and determine the best paths for IPv$6$ packets to reach their destinations efficiently. Identify the protocol that Innov$8$ Research technicians should configure on routers and network devices to enhance dynamic routing capabilities and ensure efficient routing of packets. Explain the protocol and steps for its configuration, and list its additional features. $[9$ marks$]$