%% You should probably cite draft-ietf-sunset4-noipv4 instead of this I-D.
@techreport{perreault-sunset4-noipv4-03,
    number =    {draft-perreault-sunset4-noipv4-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-perreault-sunset4-noipv4/03/},
    author =    {Simon Perreault and Wesley George and Tina Tsou (Ting ZOU) and Tianle Yang},
    title =     {{Turning off IPv4 Using DHCPv6 or Router Advertisements}},
    pagetotal = 13,
    year =      2013,
    month =     jul,
    day =       15,
    abstract =  {This memo defines a new DHCPv6 option and a new Router Advertisement option for indicating to a dual-stack host or router that IPv4 is to be turned off.},
}