%% You should probably cite rfc3145 instead of this I-D.
@techreport{ietf-l2tpext-ppp-discinfo-04,
    number =    {draft-ietf-l2tpext-ppp-discinfo-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-l2tpext-ppp-discinfo/04/},
    author =    {James D. Carlson and Rohit verma and Madhvi Verma},
    title =     {{L2TP Disconnect Cause Information}},
    pagetotal = 10,
    year =      2001,
    month =     may,
    day =       1,
    abstract =  {This document provides an extension to the Layer 2 Tunneling Protocol ("L2TP"), a mechanism for tunneling Point-to-Point Protocol (PPP) sessions. {[}STANDARDS-TRACK{]}},
}