%% You should probably cite rfc7799 instead of this I-D.
@techreport{ietf-ippm-active-passive-01,
    number =    {draft-ietf-ippm-active-passive-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-ietf-ippm-active-passive/01/},
    author =    {Al Morton},
    title =     {{Active and Passive Metrics and Methods (and everything in-between, or Hybrid)}},
    pagetotal = 12,
    year =      2015,
    month =     sep,
    day =       6,
    abstract =  {This memo provides clear definitions for Active and Passive performance assessment. The construction of Metrics and Methods can be described as Active or Passive. Some methods may use a subset of both active and passive attributes, and we refer to these as Hybrid Methods.},
}