%% You should probably cite rfc2420 instead of this I-D.
@techreport{ietf-pppext-3des-encrypt-00,
    number =    {draft-ietf-pppext-3des-encrypt-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-ietf-pppext-3des-encrypt/00/},
    author =    {Holger Kummert},
    title =     {{The PPP Triple-DES Encryption Protocol (3DESE)}},
    pagetotal = 8,
    year =      1998,
    month =     apr,
    day =       10,
    abstract =  {This document provides specific details for the use of the Triple-DES standard (3DES) for encrypting PPP encapsulated packets. {[}STANDARDS-TRACK{]}},
}