%% You should probably cite rfc9008 instead of this I-D.
@techreport{ietf-roll-useofrplinfo-04,
    number =    {draft-ietf-roll-useofrplinfo-04},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-roll-useofrplinfo/04/},
    author =    {Ines Robles and Michael Richardson and Pascal Thubert},
    title =     {{When to use RFC 6553, 6554 and IPv6-in-IPv6}},
    pagetotal = 31,
    year =      2016,
    month =     apr,
    day =       5,
    abstract =  {This document looks at different data flows through LLN networks where RPL is used to establish routing. The document enumerates the cases where RFC 6553, RFC 6554 and IPv6-in-IPv6 encapsulation is required. This analysis provides the basis on which to design efficient compression of these headers.},
}