Mobile Internet Protocol (MIP) technology enables network-application users to transparently roam between wired, wireless, and cellular networks without dropping their connections. With the Internet Engineering Task Force (IEFT) close to announcing a draft standard for MIPv6 (mobile IP support for IP version 6), software developers can begin planning product designs based on the new standard. In this technical paper, Paul Schmitz and Geoff Weaver explain the new MIPv6 standard, the differences between it and the prior standard, and the opportunities it brings. They also will demonstrate a rudimentary transition strategy for device and application mobility on emerging IPv6 networks that exist as “islands” within IPv4 networks.