%% You should probably cite draft-ietf-roll-turnon-rfc8138 instead of this I-D.
@techreport{thubert-roll-turnon-rfc8138-02,
    number =    {draft-thubert-roll-turnon-rfc8138-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-thubert-roll-turnon-rfc8138/02/},
    author =    {Pascal Thubert and Li Zhao},
    title =     {{Configuration option for RFC 8138}},
    pagetotal = 7,
    year =      ** No value found for 'doc.pub_date.year' **,
    month =     ** No value found for 'doc.pub_date' **,
    day =       ** No value found for 'doc.pub_date.day' **,
    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.},
}