%% You should probably cite draft-ietf-behave-tcp instead of this I-D.
@techreport{hoffman-behave-tcp-04,
    number =    {draft-hoffman-behave-tcp-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-hoffman-behave-tcp/04/},
    author =    {Saikat Guha},
    title =     {{NAT Behavioral Requirements for Unicast TCP}},
    pagetotal = 12,
    year =      2006,
    month =     feb,
    day =       24,
    abstract =  {This document defines a set of requirements for NATs that handle TCP that would allow many applications, such as peer-to-peer applications and on-line games, to work consistently. Developing NATs that meet this set of requirements will greatly increase the likelihood that these applications will function properly.},
}