%% You should probably cite draft-ietf-behave-syslog-nat-logging instead of this I-D.
@techreport{zhou-behave-syslog-nat-logging-01,
    number =    {draft-zhou-behave-syslog-nat-logging-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-zhou-behave-syslog-nat-logging/01/},
    author =    {Zhonghua Chen and Cathy Zhou and Tina Tsou (Ting ZOU) and Tom Taylor},
    title =     {{Syslog Format for NAT Logging}},
    pagetotal = 8,
    year =      2012,
    month =     sep,
    day =       6,
    abstract =  {Under some circumstances operators will need to maintain a dynamic record of external address and port assignments made by a Carrier Grade NAT (CGN), and will find it feasible and convenient to create such records using SYSLOG (RFC 5424). The present document standardizes a SYSLOG format to meet that recording requirement. It specifies a number of fields that could be a part of the log report, leaving it up to operators to select the fields needed for their specific circumstances. {[}*** Subject to discussion*** The log format presented here may also be used by PCP server implementations to log the mappings they implement.{]}},
}