The Boeing Company Air/land/sea/space mobile nodes (e.g., aircraft of various configurations, terrestrial vehicles, seagoing vessels, space systems, enterprise wireless devices, pedestrians with cell phones, etc.) communicate with networked correspondents over wireless and/or wired-line data links and configure mobile routers to connect end user networks. This document presents a multilink virtual interface specification that enables mobile nodes to coordinate with a network- based mobility service, fixed node correspondents and/or other mobile node peers. The virtual interface provides an adaptation layer service that also applies for both mobile and more static deployments such as enterprise and home networks. This document specifies the transmission of IP packets over Overlay Multilink Network (OMNI) Interfaces.