%% You should probably cite draft-ietf-bfd-optimizing-authentication instead of this I-D.
@techreport{mahesh-bfd-authentication-01,
    number =    {draft-mahesh-bfd-authentication-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-mahesh-bfd-authentication/01/},
    author =    {Mahesh Jethanandani and Ashesh Mishra and Ankur Saxena and Manav Bhatia},
    title =     {{Optimizing BFD Authentication}},
    pagetotal = 7,
    year =      2015,
    month =     sep,
    day =       29,
    abstract =  {This document describes an optimization to BFD Authentication as described in Section 6.7 of BFD {[}RFC5880{]}.},
}