%% You should probably cite rfc8908 instead of this I-D.
@techreport{ietf-capport-api-04,
    number =    {draft-ietf-capport-api-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-capport-api/04/},
    author =    {Tommy Pauly and Darshak Thakore},
    title =     {{Captive Portal API}},
    pagetotal = 10,
    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 describes an HTTP API that allows clients to interact with a Captive Portal system.},
}