IETF RFC 5175
IPv6 Router Advertisement Flags Option
|Publication Date:||1 March 2008|
The IPv6 Neighbor Discovery's Router Advertisement message contains an 8-bit field reserved for single-bit flags. Several protocols have reserved flags in this field and others are preparing to reserve a sufficient number of flags to exhaust the field. This document defines an option to the Router Advertisement message that expands the number of flag bits available.