%% You should probably cite draft-gundogan-roll-dis-modifications instead of this I-D.
@techreport{zhong-roll-dis-modifications-00,
    number =    {draft-zhong-roll-dis-modifications-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-zhong-roll-dis-modifications/00/},
    author =    {Zhong Denglin and Dominique Barthel and Emmanuel Baccelli},
    title =     {{DIS Modifications}},
    pagetotal = 14,
    year =      2015,
    month =     nov,
    day =       4,
    abstract =  {This document augments {[}RFC6550{]} with DIS flags and options that allow a RPL node to better control how neighbor RPL routers respond to its solicitation for DIOs.},
}