This document discusses using IPv6 tunneling to transfer IPv6 traffic over an IPv4 network. There are two types of IPv6 tunnels: manual and automatic. The lab will focus on configuring a manual IPv6-in-IPv4 tunnel, which requires specifying the IPv4 source and destination addresses of the tunnel endpoints. The task is to configure the provided Packet Tracer topology to create manual tunnels between all devices to allow IPv6 pinging across the IPv4 network.