%% You should probably cite rfc1533 instead of this I-D.
@techreport{ietf-dhc-options-03,
    number =    {draft-ietf-dhc-options-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-dhc-options/03/},
    author =    {Steve Alexander and Ralph Droms},
    title =     {{DHCP Options and BOOTP Vendor Extensions}},
    pagetotal = 30,
    year =      1993,
    month =     jun,
    day =       11,
    abstract =  {This document specifies the current set of DHCP options. {[}STANDARDS-TRACK{]}},
}