%% You should probably cite rfc7084 instead of this I-D.
@techreport{ietf-v6ops-6204bis-12,
    number =    {draft-ietf-v6ops-6204bis-12},
    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-v6ops-6204bis/12/},
    author =    {Hemant Singh and Wes Beebee and Chris Donley and Barbara Stark},
    title =     {{Basic Requirements for IPv6 Customer Edge Routers}},
    pagetotal = 21,
    year =      2012,
    month =     oct,
    day =       30,
    abstract =  {This document specifies requirements for an IPv6 Customer Edge (CE) router. Specifically, the current version of this document focuses on the basic provisioning of an IPv6 CE router and the provisioning of IPv6 hosts attached to it. The document also covers IP transition technologies. Two transition technologies in RFC 5969's IPv6 Rapid Deployment on IPv4 Infrastructures (6rd) and RFC 6333's Dual-Stack Lite (DS-Lite) are covered in the document. The document obsoletes RFC 6204.},
}