%% You should probably cite rfc2073 instead of this I-D.
@techreport{ietf-ipngwg-unicast-addr-fmt-03,
    number =    {draft-ietf-ipngwg-unicast-addr-fmt-03},
    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-ipngwg-unicast-addr-fmt/03/},
    author =    {Dr. Jon Postel and Peter Lothberg and Bob Hinden and Dr. Steve E. Deering and Yakov Rekhter},
    title =     {{An IPv6 Provider-Based Unicast Address Format}},
    pagetotal = 7,
    year =      1996,
    month =     feb,
    day =       24,
    abstract =  {This document defines an IPv6 provider-based unicast address format for use in the Internet. {[}STANDARDS-TRACK{]}},
}