%% You should probably cite rfc5118 instead of this I-D.
@techreport{ietf-sipping-ipv6-torture-tests-04,
    number =    {draft-ietf-sipping-ipv6-torture-tests-04},
    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-sipping-ipv6-torture-tests/04/},
    author =    {Chris Boulton and Vijay K. Gurbani and Robert Sparks},
    title =     {{Session Initiation Protocol (SIP) Torture Test Messages for Internet Protocol Version 6 (IPv6)}},
    pagetotal = 18,
    year =      2007,
    month =     oct,
    day =       12,
    abstract =  {This document provides examples of Session Initiation Protocol (SIP) test messages designed to exercise and "torture" the code of an IPv6-enabled SIP implementation. This memo provides information for the Internet community.},
}