%% You should probably cite draft-ietf-6man-rpl-option instead of this I-D.
@techreport{hui-6man-rpl-option-01,
    number =    {draft-hui-6man-rpl-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-hui-6man-rpl-option/01/},
    author =    {Jonathan Hui and JP Vasseur},
    title =     {{RPL Option for Carrying RPL Information in Data-Plane Datagrams}},
    pagetotal = 15,
    year =      2010,
    month =     jun,
    day =       9,
    abstract =  {The RPL protocol requires data-plane datagrams to carry RPL routing information that is processed by RPL routers when forwarding those datagrams. This document describes the RPL option for use within a RPL domain.},
}