%% You should probably cite rfc8393 instead of this I-D.
@techreport{farrel-sfc-convent-00,
    number =    {draft-farrel-sfc-convent-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-farrel-sfc-convent/00/},
    author =    {Adrian Farrel and Lucy Yong and John Drake},
    title =     {{Operating the Network Service Header with Next Protocol "None"}},
    pagetotal = 8,
    year =      2017,
    month =     jan,
    day =       22,
    abstract =  {This document describes the use of the Network Service Header (NSH) in a Service Function Chaining (SFC) overlay network with no payload data and only carrying metadata. This is achieved by defining a new "next protocol" type value of "None". This document illustrates some of the functions that may be achieved or enhanced by this mechanism, but it does not provide an exhaustive list of use cases, nor is it intended to be definitive about the functions it describes. It is expected that other documents will describe specific use cases in more detail and will define the protocol mechanics for each use case.},
}