%% You should probably cite draft-ietf-sfc-serviceid-header instead of this I-D.
@techreport{sfc-serviceid-header-01,
    number =    {draft-sfc-serviceid-header-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-sfc-serviceid-header/01/},
    author =    {Behcet Sarikaya and Mohamed Boucadair and Dirk Von Hugo},
    title =     {{Service Function Chaining: Subscriber and Policy Identification Variable-Length Network Service Header (NSH) Context Headers}},
    pagetotal = 8,
    year =      2018,
    month =     oct,
    day =       16,
    abstract =  {This document discusses how to inform Service Functions about subscriber- and service-related information for the sake of policy enforcement and appropriate service function chaining operations.},
}