%% You should probably cite rfc8122 instead of this I-D.
@techreport{ietf-mmusic-4572-update-07,
    number =    {draft-ietf-mmusic-4572-update-07},
    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-mmusic-4572-update/07/},
    author =    {Christer Holmberg},
    title =     {{SDP Fingerprint Attribute Usage Clarifications}},
    pagetotal = 8,
    year =      2016,
    month =     sep,
    day =       25,
    abstract =  {This document updates RFC 4572 by clarifying the usage of multiple SDP 'fingerprint' attributes with a single SDP media description ("m= line"). The document also updates the preferred cipher suite with a stronger cipher suite.},
}