%% You should probably cite draft-ietf-roll-rpl instead of this I-D.
@techreport{dt-roll-rpl-01,
    number =    {draft-dt-roll-rpl-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-dt-roll-rpl/01/},
    author =    {Tim Winter and ROLL Team},
    title =     {{RPL: Routing Protocol for Low Power and Lossy Networks}},
    pagetotal = 69,
    year =      2009,
    month =     jul,
    day =       13,
    abstract =  {This document specifies the Routing Protocol for Low Power and Lossy Networks (RPL), in accordance with the requirements described in {[}I-D.ietf-roll-building-routing-reqs{]}, {[}I-D.ietf-roll-home-routing-reqs{]}, {[}I-D.ietf-roll-indus-routing-reqs{]}, and {[}RFC5548{]}.},
}