@misc{rfc4727,
    series =    {Request for Comments},
    number =    4727,
    howpublished =  {RFC 4727},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC4727},
    url =       {https://www.rfc-editor.org/info/rfc4727},
    author =    {Bill Fenner (ˢˣˠ)},
    title =     {{Experimental Values In IPv4, IPv6, ICMPv4, ICMPv6, UDP, and TCP Headers}},
    pagetotal = 11,
    year =      2006,
    month =     nov,
    abstract =  {When experimenting with or extending protocols, it is often necessary to use some sort of protocol number or constant in order to actually test or experiment with the new function, even when testing in a closed environment. This document reserves some ranges of numbers for experimentation purposes in specific protocols where the need to support experimentation has been identified, and it describes the numbers that have already been reserved by other documents. {[}STANDARDS-TRACK{]}},
}