%% You should probably cite draft-ietf-v6ops-6to4-advisory instead of this I-D.
@techreport{carpenter-v6ops-6to4-teredo-advisory-03,
    number =    {draft-carpenter-v6ops-6to4-teredo-advisory-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-carpenter-v6ops-6to4-teredo-advisory/03/},
    author =    {Brian E. Carpenter},
    title =     {{Advisory Guidelines for 6to4 Deployment}},
    pagetotal = 18,
    year =      2011,
    month =     mar,
    day =       11,
    abstract =  {This document provides advice to network operators about deployment of the 6to4 technique for automatic tunneling of IPv6 over IPv4. It is principally addressed to Internet Service Providers, including those that do not yet support IPv6, and to Content Providers. The intention of the advice is to minimise both user dissatisfaction and help desk calls.},
}