Mobile IPv6 (MIPv6) is a protocol developed as a subset of IPv6 to support mobile connections. IP: The Unsung Hero." IPv4 or IPv6— Myths and Realities . It is possible to integrate the mobile IP and other tunneling protocols by extending the supported tunneling types of mobile IP. Mobile IPv4 and. Abstract This document describes a protocol for supporting Mobile Networks between a Mobile Router and a Home Agent by extending the Mobile IPv4 protocol. Mobile Internet basics: Mobile IPv4 Tunnels, Bindings & Datagrams protocols such as IPv4 and IPv6 as well as mobile specific protocols such.