This document presents information on the impacts of adopting Internet Protocol version 6 (IPv6) into infrastructure control systems. The investigation was performed by members of Sandia National Laboratories and funded by the Department of Energy’s (DOE) National SCADA Test Bed (NSTB) Program. Specifically, the document presents a brief background and description of the features of IPv6, details on how IPv6 may be implemented in a control system, and potential issues that may surface related to reliability and security. IPv6 networking is being adopted and brings additional functionality when compared to IPv4 that will be useful to control system applications. Thus, control system operators should begin their planning by developing an IPv6 transition strategy that will enable the planned introduction of IPv6 compatible components into their control system infrastructures. In the near term the adoption process should proceed with education and control system architecture planning for the introduction of IPv6.