%% You should probably cite rfc7721 instead of this I-D.
@techreport{ietf-6man-ipv6-address-generation-privacy-08,
    number =    {draft-ietf-6man-ipv6-address-generation-privacy-08},
    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-6man-ipv6-address-generation-privacy/08/},
    author =    {Alissa Cooper and Fernando Gont and Dave Thaler},
    title =     {{Security and Privacy Considerations for IPv6 Address Generation Mechanisms}},
    pagetotal = 18,
    year =      2015,
    month =     sep,
    day =       23,
    abstract =  {This document discusses privacy and security considerations for several IPv6 address generation mechanisms, both standardized and non-standardized. It evaluates how different mechanisms mitigate different threats and the trade-offs that implementors, developers, and users face in choosing different addresses or address generation mechanisms.},
}