%% You should probably cite rfc8020 instead of this I-D.
@techreport{ietf-dnsop-nxdomain-cut-05,
    number =    {draft-ietf-dnsop-nxdomain-cut-05},
    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-dnsop-nxdomain-cut/05/},
    author =    {Stéphane Bortzmeyer and Shumon Huque},
    title =     {{NXDOMAIN: There Really Is Nothing Underneath}},
    pagetotal = 10,
    year =      2016,
    month =     sep,
    day =       18,
    abstract =  {This document states clearly that when a DNS resolver receives a response with a response code of NXDOMAIN, it means that the domain name which is thus denied AND ALL THE NAMES UNDER IT do not exist. This document clarifies RFC 1034 and modifies a portion of RFC 2308: it updates both of them.},
}