@misc{rfc2671,
    series =    {Request for Comments},
    number =    2671,
    howpublished =  {RFC 2671},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC2671},
    url =       {https://www.rfc-editor.org/info/rfc2671},
    author =    {Paul A. Vixie},
    title =     {{Extension Mechanisms for DNS (EDNS0)}},
    pagetotal = 7,
    year =      1999,
    month =     aug,
    abstract =  {The Domain Name System's wire protocol includes a number of fixed fields whose range has been or soon will be exhausted and does not allow clients to advertise their capabilities to servers. This document describes backward compatible mechanisms for allowing the protocol to grow. {[}STANDARDS-TRACK{]}},
}