%% You should probably cite draft-ietf-mobike-design instead of this I-D.
@techreport{kivinen-mobike-design-00,
    number =    {draft-kivinen-mobike-design-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-kivinen-mobike-design/00/},
    author =    {Tero Kivinen},
    title =     {{Design of the MOBIKE protocol}},
    pagetotal = 17,
    year =      2004,
    month =     mar,
    day =       10,
    abstract =  {This document discusses the potential design decisions in the base MOBIKE (IKEv2 Mobility and Multihoming) protocol.},
}