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IPv4 is the prevalent protocol used today as the worldwide communications vehicle for the Internet. Although some organizations have identified target dates for their IPv6 deployments, IPv4/IPv6 transition technologies are in place to support a long coexistence and transition time frame. Widespread adoption of the IPv6 protocol will materialize in a logical progression that starts with the networking equipment providers, into the service providers, into the application/content providers, and then move its way down into enterprise and residential use. An organization should create an IPv6 readiness program that is specific to its network. This chapter provides a summary of the IPv6 assessment process. Taking stock of every aspect of the IP network and support structure including processes and people is critical to define the starting point and action items for deploying IPv6 within the network and/or within the chosen network scope.