%% You should probably cite rfc2746 instead of this I-D.
@techreport{ietf-rsvp-tunnel-04,
    number =    {draft-ietf-rsvp-tunnel-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-rsvp-tunnel/04/},
    author =    {John J. Krawczyk and Lixia Zhang and John T. Wroclawski and Andreas Terzis},
    title =     {{RSVP Operation Over IP Tunnels}},
    pagetotal = 25,
    year =      1999,
    month =     may,
    day =       17,
    abstract =  {This document describes an approach for providing RSVP protocol services over IP tunnels. {[}STANDARDS-TRACK{]}},
}