%% You should probably cite draft-touch-tcpm-2140bis instead of this I-D.
@techreport{welzl-tcpm-tcb-sharing-00,
    number =    {draft-welzl-tcpm-tcb-sharing-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-welzl-tcpm-tcb-sharing/00/},
    author =    {Michael Welzl and Safiqul Islam and Dr. Joseph D. Touch and Jianjie You},
    title =     {{The state of implementation of TCP control block interdependence}},
    pagetotal = 4,
    year =      2015,
    month =     oct,
    day =       19,
    abstract =  {This document provides an overview of the state of implementation of RFC 2140, in preparation for a possible future RFC2140bis document.},
}