@misc{rfc3947,
    series =    {Request for Comments},
    number =    3947,
    howpublished =  {RFC 3947},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC3947},
    url =       {https://www.rfc-editor.org/info/rfc3947},
    author =    {Tero Kivinen and Ari Huttunen and Brian Swander and Victor Volpe},
    title =     {{Negotiation of NAT-Traversal in the IKE}},
    pagetotal = 16,
    year =      2005,
    month =     jan,
    abstract =  {This document describes how to detect one or more network address translation devices (NATs) between IPsec hosts, and how to negotiate the use of UDP encapsulation of IPsec packets through NAT boxes in Internet Key Exchange (IKE). {[}STANDARDS-TRACK{]}},
}