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Lab with IPv6 Tunnel
This document explains how to bring IPv6 Internet connectivity to a lab platform using tunnels. This scenario is useful whenever IPv6 is not enabled on the Internet access of your Lab.
As shown in Figure 1, we suppose that your lab is equipped with either dual-stack (supporting IPv4 and IPv6) devices or IPv6-only devices. In order to get IPv6 connectivity to your lab, you need to traverse a legacy IPv4 only network. Unfortunately, this is still the case for many internet service providers around the world.
In such case, tunnel mechanisms can help you get IPv6 connectivity without waiting for the migration of the IPv4-only network. RFC 7059 presents an exhaustive overview of tunnel mechanisms. In this document, you will use a static 6in4 tunnel. Precisely, IPv6 packets generated by your lab devices are encapsulated in IPv4 headers in order to traverse the IPv4-only network. This IPv4 header is removed, and the original IPv6 packets are routed in the dual-stack Internet.
Hurricane Electric provides a free service for 6in4 tunnels. Subscription is available on https://tunnelbroker.net. You will need to create a Regular Tunnel.
