%% You should probably cite rfc8300 instead of this I-D.
@techreport{ietf-sfc-nsh-12,
    number =    {draft-ietf-sfc-nsh-12},
    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-nsh/12/},
    author =    {Paul Quinn and Uri Elzur},
    title =     {{Network Service Header}},
    pagetotal = 37,
    year =      ,
    month =     ,
    day =       ,
    abstract =  {This document describes a Network Service Header (NSH) inserted onto packets or frames to realize service function paths. NSH also provides a mechanism for metadata exchange along the instantiated service path. NSH is the SFC encapsulation required to support the Service Function Chaining (SFC) Architecture (defined in RFC7665).},
}