%% You should probably cite draft-ietf-opsawg-pcap instead of this I-D.
@techreport{gharris-opsawg-pcap-02,
    number =    {draft-gharris-opsawg-pcap-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-gharris-opsawg-pcap/02/},
    author =    {Guy Harris and Michael Richardson},
    title =     {{PCAP Capture File Format}},
    pagetotal = 36,
    year =      2021,
    month =     jun,
    day =       23,
    abstract =  {This document describes the format used by the libpcap library to record captured packets to a file. Programs using the libpcap library to read and write those files, and thus reading and writing files in that format, include tcpdump.},
}