%% You should probably cite rfc5737 instead of this I-D.
@techreport{iana-ipv4-examples-02,
    number =    {draft-iana-ipv4-examples-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-iana-ipv4-examples/02/},
    author =    {Jari Arkko and Michelle Cotton and Leo Vegoda},
    title =     {{IPv4 Address Blocks Reserved for Documentation}},
    pagetotal = 4,
    year =      2009,
    month =     sep,
    day =       21,
    abstract =  {Three IPv4 unicast address blocks are reserved for use in examples in specifications and other documents. This document describes the use of these blocks. This document is not an Internet Standards Track specification; it is published for informational purposes.},
}