%% You should probably cite draft-ietf-radext-radius-extensions instead of this I-D.
@techreport{dekok-radext-radius-extensions-01,
    number =    {draft-dekok-radext-radius-extensions-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-dekok-radext-radius-extensions/01/},
    author =    {Alan DeKok and Avi Lior},
    title =     {{Remote Authentication Dial In User Service (RADIUS) Protocol Extensions}},
    pagetotal = 56,
    year =      2011,
    month =     feb,
    day =       8,
    abstract =  {The Remote Authentication Dial In User Service (RADIUS) protocol is nearing exhaustion of its current 8-bit attribute type space. In addition, experience shows a growing need for complex grouping, along with attributes which can carry more than 253 octets of data. This document defines changes to RADIUS which address all of the above problems.},
}