%% You should probably cite rfc7679 instead of this I-D.
@techreport{ietf-ippm-2679-bis-04,
    number =    {draft-ietf-ippm-2679-bis-04},
    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-2679-bis/04/},
    author =    {Guy Almes and Sunil Kalidindi and Matthew J. Zekauskas and Al Morton},
    title =     {{A One-Way Delay Metric for IPPM}},
    pagetotal = 25,
    year =      2015,
    month =     aug,
    day =       12,
    abstract =  {This memo (RFC 2679 bis) defines a metric for one-way delay of packets across Internet paths. It builds on notions introduced and discussed in the IPPM Framework document, RFC 2330; the reader is assumed to be familiar with that document. This memo makes RFC 2679 obsolete.},
}