%% You should probably cite rfc6879 instead of this I-D.
@techreport{ietf-6renum-enterprise-00,
    number =    {draft-ietf-6renum-enterprise-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-ietf-6renum-enterprise/00/},
    author =    {Bing Liu and Sheng Jiang},
    title =     {{IPv6 Enterprise Network Renumbering Scenarios and Guidelines}},
    pagetotal = 16,
    year =      2012,
    month =     feb,
    day =       6,
    abstract =  {This document analyzes enterprise renumbering events and describes the best current practice among the existing renumbering mechanisms. According to the different stages of renumbering events, considerations and best current practices are described in three categories: during network design, for preparation of renumbering, and during a renumbering operation. A gap inventory is listed at the end of this document.},
}