%% You should probably cite rfc8171 instead of this I-D.
@techreport{ietf-trill-directory-assist-mechanisms-12,
    number =    {draft-ietf-trill-directory-assist-mechanisms-12},
    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-trill-directory-assist-mechanisms/12/},
    author =    {Donald E. Eastlake 3rd and Linda Dunbar and Radia Perlman and Yizhou Li},
    title =     {{Transparent Interconnection of Lots of Links (TRILL): Edge Directory Assistance Mechanisms}},
    pagetotal = 55,
    year =      2017,
    month =     mar,
    day =       2,
    abstract =  {This document describes mechanisms for providing directory service to TRILL (Transparent Interconnection of Lots of Links) edge switches. The directory information provided can be used in reducing multi-destination traffic, particularly ARP / Neighbor Discovery (ND) and unknown unicast flooding. It can also be used to detect traffic with forged source addresses.},
}