%% You should probably cite draft-savolainen-6lo-optimal-transmission-window instead of this I-D.
@techreport{savolainen-6man-optimal-transmission-window-00,
    number =    {draft-savolainen-6man-optimal-transmission-window-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-savolainen-6man-optimal-transmission-window/00/},
    author =    {Teemu Savolainen and Johanna Nieminen},
    title =     {{Optimal Transmission Window Configuration Option for ICMPv6 Router Advertisement}},
    pagetotal = 8,
    year =      2012,
    month =     jun,
    day =       18,
    abstract =  {This specification describes an ICMPv6 Router Advertisement option for a router to configure optimal transmission window for hosts transmitting packets through the router.},
}