%% You should probably cite rfc6666 instead of this I-D.
@techreport{ietf-v6ops-ipv6-discard-prefix-04,
    number =    {draft-ietf-v6ops-ipv6-discard-prefix-04},
    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-v6ops-ipv6-discard-prefix/04/},
    author =    {Nick Hilliard and David Freedman},
    title =     {{A Discard Prefix for IPv6}},
    pagetotal = 6,
    year =      2012,
    month =     may,
    day =       22,
    abstract =  {Remote triggered black hole filtering describes a method of mitigating the effects of denial-of-service attacks by selectively discarding traffic based on source or destination address. Remote triggered black hole routing describes a method of selectively re- routing traffic into a sinkhole router (for further analysis) based on destination address. This document updates RFC5156 by explaining why a unique IPv6 prefix should be formally assigned by IANA for the purpose of facilitating IPv6 remote triggered black hole filtering and routing.},
}