%% You should probably cite rfc7123 instead of this I-D.
@techreport{ietf-opsec-ipv6-implications-on-ipv4-nets-00,
    number =    {draft-ietf-opsec-ipv6-implications-on-ipv4-nets-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-opsec-ipv6-implications-on-ipv4-nets/00/},
    author =    {Fernando Gont},
    title =     {{Security Implications of IPv6 on IPv4 Networks}},
    pagetotal = 18,
    year =      2012,
    month =     sep,
    day =       4,
    abstract =  {This document discusses the security implications of native IPv6 support and IPv6 transition/co-existence technologies on "IPv4-only" networks, and describes possible mitigations for the aforementioned issues.},
}