%% You should probably cite rfc7314 instead of this I-D.
@techreport{andrews-dnsext-expire-00,
    number =    {draft-andrews-dnsext-expire-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-andrews-dnsext-expire/00/},
    author =    {Mark P. Andrews},
    title =     {{EDNS EXPIRE OPTION}},
    pagetotal = 6,
    year =      2008,
    month =     aug,
    day =       25,
    abstract =  {Provide a method for slave DNS servers to honour the SOA EXPIRE field as if they were always transferring from the master, even when using other slaves to perform indirect transfers and refresh queries.},
}