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.