%% You should probably cite rfc3597 instead of this I-D.
@techreport{ietf-dnsext-unknown-rrs-06,
    number =    {draft-ietf-dnsext-unknown-rrs-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-dnsext-unknown-rrs/06/},
    author =    {Andreas Gustafsson},
    title =     {{Handling of Unknown DNS Resource Record (RR) Types}},
    pagetotal = 8,
    year =      2003,
    month =     jun,
    day =       30,
    abstract =  {Extending the Domain Name System (DNS) with new Resource Record (RR) types currently requires changes to name server software. This document specifies the changes necessary to allow future DNS implementations to handle new RR types transparently. {[}STANDARDS-TRACK{]}},
}