%% You should probably cite rfc6879 instead of this I-D.
@techreport{ietf-6renum-enterprise-04,
    number =    {draft-ietf-6renum-enterprise-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-6renum-enterprise/04/},
    author =    {Sheng Jiang and Bing Liu},
    title =     {{IPv6 Enterprise Network Renumbering Scenarios and Guidelines}},
    pagetotal = 17,
    year =      2012,
    month =     nov,
    day =       28,
    abstract =  {This document analyzes events that cause renumbering and describes the best renumbering practice. Best practices are described in three categories: those applicable during network design, those applicable during preparation for renumbering, and those applicable during the renumbering operation.},
}