%% You should probably cite rfc3169 instead of this I-D.
@techreport{ietf-nasreq-criteria-06,
    number =    {draft-ietf-nasreq-criteria-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-nasreq-criteria/06/},
    author =    {Mark A. Beadles and David Mitton},
    title =     {{Criteria for Evaluating Network Access Server Protocols}},
    pagetotal = 17,
    year =      2001,
    month =     jul,
    day =       5,
    abstract =  {This document defines requirements for protocols used by Network Access Servers (NAS). This memo provides information for the Internet community.},
}