%% You should probably cite rfc2977 instead of this I-D.
@techreport{ietf-mobileip-aaa-reqs-04,
    number =    {draft-ietf-mobileip-aaa-reqs-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-mobileip-aaa-reqs/04/},
    author =    {Charles E. Perkins and Tom Hiller and Steven M. Glass and Stuart Jacobs},
    title =     {{Mobile IP Authentication, Authorization, and Accounting Requirements}},
    pagetotal = 27,
    year =      2000,
    month =     jul,
    day =       6,
    abstract =  {This document contains the requirements which would have to be supported by a AAA service to aid in providing Mobile IP services. This memo provides information for the Internet community.},
}