%% You should probably cite rfc6334 instead of this I-D.
@techreport{ietf-softwire-ds-lite-tunnel-option-10,
    number =    {draft-ietf-softwire-ds-lite-tunnel-option-10},
    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-softwire-ds-lite-tunnel-option/10/},
    author =    {David Hankins and Tomek Mrugalski},
    title =     {{Dynamic Host Configuration Protocol for IPv6 (DHCPv6) Option for Dual-Stack Lite}},
    pagetotal = 7,
    year =      2011,
    month =     mar,
    day =       7,
    abstract =  {This document specifies a DHCPv6 option that is meant to be used by a Dual-Stack Lite Basic Bridging BroadBand (B4) element to discover the IPv6 address of its corresponding Address Family Transition Router (AFTR). {[}STANDARDS-TRACK{]}},
}