%% You should probably cite rfc7341 instead of this I-D.
@techreport{ietf-dhc-dhcpv4-over-dhcpv6-01,
    number =    {draft-ietf-dhc-dhcpv4-over-dhcpv6-01},
    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-dhc-dhcpv4-over-dhcpv6/01/},
    author =    {Qi Sun and Yong Cui and Marcin Siodelski and Suresh Krishnan and Ian Farrer},
    title =     {{DHCPv4 over DHCPv6 Transport}},
    pagetotal = 11,
    year =      2013,
    month =     jul,
    day =       15,
    abstract =  {This document describes a mechanism for obtaining IPv4 address and other parameters in IPv6 networks by carrying DHCPv4 messages over DHCPv6 transport.},
}