@techreport{ietf-ipsec-ike-ext-meth-04,
    number =    {draft-ietf-ipsec-ike-ext-meth-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-ipsec-ike-ext-meth/04/},
    author =    {Tero Kivinen},
    title =     {{ISAKMP \& IKE Extensions Methods}},
    pagetotal = 13,
    year =      2000,
    month =     nov,
    day =       28,
    abstract =  {This document describes multiple extension methods of the ISAKMP {[}RFC 2408{]} and IKE {[}RFC 2409{]} protocols and how the older versions should respond when they receive such extensions. This document mainly tries to describe the best practice of extensions handling in ISAKMP {[}RFC 2408{]} and IKE {[}RFC 2409{]}, so that a future version can be made without break- ing the old existing versions.},
}