%% You should probably cite draft-ietf-pcp-optimize-keepalives-06 instead of this revision.
@techreport{ietf-pcp-optimize-keepalives-01,
    number =    {draft-ietf-pcp-optimize-keepalives-01},
    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-pcp-optimize-keepalives/01/},
    author =    {Tirumaleswar Reddy.K and Markus Isomaki and Dan Wing and Prashanth Patil},
    title =     {{Optimizing NAT and Firewall Keepalives Using Port Control Protocol (PCP)}},
    pagetotal = 15,
    year =      2013,
    month =     dec,
    day =       3,
    abstract =  {This document describes how Port Control Protocol is useful to reduce NAT and firewall keepalive messages for a variety of applications.},
}