The Boeing Company MWA Ltd c/o Inmarsat Global Ltd This document defines a new IPv6 Neighbor Discovery (ND) option termed the "Overlay Multilink Network Interface (OMNI) Option". The OMNI option may appear in any IPv6 ND message type; it is processed by interface types that recognize the option and ignored by all other interface types. The option supports functions such as prefix registration and multilink coordination, and is extensible to support additional functions in the future.