%% You should probably cite rfc3153 instead of this I-D.
@techreport{ietf-pppext-pppmux-03,
    number =    {draft-ietf-pppext-pppmux-03},
    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-pppext-pppmux/03/},
    author =    {Irfan Ali and Rajesh Pazhyannur and Craig Fox},
    title =     {{PPP Multiplexing}},
    pagetotal = 9,
    year =      2001,
    month =     jun,
    day =       13,
    abstract =  {This document describes a method to reduce the PPP (Point-to-Point Protocol) framing overhead used to transport small packets over slow links. {[}STANDARDS-TRACK{]}},
}