%% You should probably cite draft-ietf-intarea-tunnels-13 instead of this revision.
@techreport{ietf-intarea-tunnels-03,
    number =    {draft-ietf-intarea-tunnels-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-intarea-tunnels/03/},
    author =    {Dr. Joseph D. Touch and Mark Townsley},
    title =     {{IP Tunnels in the Internet Architecture}},
    pagetotal = 47,
    year =      2016,
    month =     jul,
    day =       7,
    abstract =  {This document discusses the role of IP tunnels in the Internet architecture, in which IP datagrams are carried as payloads in non- link layer protocols. It explains their relationship to existing protocol layers and the challenges in supporting IP tunneling based on the equivalence of tunnels to links.},
}