@techreport{bellis-behave-natpresent-00,
    number =    {draft-bellis-behave-natpresent-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-bellis-behave-natpresent/00/},
    author =    {Ray Bellis and Geoff Huston},
    title =     {{Signalling the Presence of NAT}},
    pagetotal = 7,
    year =      2011,
    month =     oct,
    day =       23,
    abstract =  {End-to-end applications have difficulty distinguishing between packets that have been passed through a Network Address Translator (NAT) and packets that have been passed along a clear end-to-end path. We propose mechanisms for IPv4 and IPv6 whereby NAT devices explicitly signal their operation as a means of allowing applications to distinguish the presence of otherwise undetected NATs in the end- to-end path.},
}