%% You should probably cite rfc6204 instead of this I-D.
@techreport{ietf-v6ops-ipv6-cpe-router-09,
    number =    {draft-ietf-v6ops-ipv6-cpe-router-09},
    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-ipv6-cpe-router/09/},
    author =    {Wes Beebee and Chris Donley and Hemant Singh and Ole Trøan and Barbara Stark},
    title =     {{Basic Requirements for IPv6 Customer Edge Routers}},
    pagetotal = 17,
    year =      2010,
    month =     dec,
    day =       20,
    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. This document is not an Internet Standards Track specification; it is published for informational purposes.},
}