@techreport{simpson-esp-v2-00,
    number =    {draft-simpson-esp-v2-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-simpson-esp-v2/00/},
    author =    {William A. Simpson},
    title =     {{IP Encapsulating Security Payload (ESP) for Implementors}},
    pagetotal = 15,
    year =      1997,
    month =     aug,
    day =       1,
    abstract =  {This document describes a confidentiality mechanism for IP datagrams. Payload headers are encapsulated within an opaque envelope. Under some circumstances, authentication and integrity are optionally provided for IP datagrams.},
}