%% You should probably cite rfc9035 instead of this I-D.
@techreport{ietf-roll-turnon-rfc8138-06,
    number =    {draft-ietf-roll-turnon-rfc8138-06},
    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-turnon-rfc8138/06/},
    author =    {Pascal Thubert and Li Zhao},
    title =     {{A RPL Configuration Option for the 6LoWPAN Routing Header}},
    pagetotal = 10,
    year =      2020,
    month =     apr,
    day =       15,
    abstract =  {This document complements RFC 8138 and dedicates a bit in the RPL configuration option defined in RFC 6550 to indicate whether RFC 8138 compression is used within the RPL Instance.},
}