%% You should probably cite rfc8979 instead of this I-D.
@techreport{ietf-sfc-serviceid-header-14,
    number =    {draft-ietf-sfc-serviceid-header-14},
    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-sfc-serviceid-header/14/},
    author =    {Behcet Sarikaya and Dirk Von Hugo and Mohamed Boucadair},
    title =     {{Subscriber and Performance Policy Identifier Context Headers in the Network Service Header (NSH)}},
    pagetotal = 11,
    year =      2020,
    month =     dec,
    day =       11,
    abstract =  {This document defines the Subscriber and Performance Policy Identifier Context Headers. These Variable-Length Context Headers can be carried in the Network Service Header (NSH) and are used to inform Service Functions (SFs) of subscriber- and performance-related information for the sake of policy enforcement and appropriate Service Function Chaining (SFC) operations. The structure of each Context Header and their use and processing by NSH-aware nodes are described.},
}