%% You should probably cite draft-ietf-spring-srv6-network-programming instead of this I-D.
@techreport{filsfils-spring-srv6-network-programming-04,
    number =    {draft-filsfils-spring-srv6-network-programming-04},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-filsfils-spring-srv6-network-programming/04/},
    author =    {Clarence Filsfils and Zhenbin Li and John Leddy and Daniel Voyer and Daniel Bernier and Dirk Steinberg and Robert Raszuk and Satoru Matsushima and David Lebrun and Bruno Decraene and Bart Peirens and Stefano Salsano and Gaurav Naik and Hani Elmalky and Prem Jonnalagadda and Milad Sharif},
    title =     {{SRv6 Network Programming}},
    pagetotal = 57,
    year =      ** No value found for 'doc.pub_date.year' **,
    month =     ** No value found for 'doc.pub_date' **,
    day =       ** No value found for 'doc.pub_date.day' **,
    abstract =  {This document describes the SRv6 network programming concept and its most basic functions.},
}