%% You should probably cite draft-ietf-roll-useofrplinfo instead of this I-D.
@techreport{robles-roll-useofrplinfo-01,
    number =    {draft-robles-roll-useofrplinfo-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-robles-roll-useofrplinfo/01/},
    author =    {Ines Robles and Michael Richardson},
    title =     {{When to use RFC 6553, 6554 and IPv6-in-IPv6}},
    pagetotal = 23,
    year =      2015,
    month =     sep,
    day =       14,
    abstract =  {This document states different cases where RFC 6553, RFC 6554 and IPv6-in-IPv6 encapsulation is required to set the bases to help defining the compression of RPL routing information in LLN environments.},
}