%% You should probably cite draft-ietf-ipv6-ra-flags-option instead of this I-D.
@techreport{haberman-ipv6-ra-flags-option-01,
    number =    {draft-haberman-ipv6-ra-flags-option-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-haberman-ipv6-ra-flags-option/01/},
    author =    {Brian Haberman and Bob Hinden},
    title =     {{IPv6 Router Advertisement Flags Option}},
    pagetotal = 7,
    year =      2007,
    month =     apr,
    day =       18,
    abstract =  {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 available number of flag bits available.},
}