%% You should probably cite rfc8907 instead of this I-D.
@techreport{ietf-opsawg-tacacs-04,
    number =    {draft-ietf-opsawg-tacacs-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-opsawg-tacacs/04/},
    author =    {Thorsten Dahm and Andrej Ota and dcmgash@cisco.com and David Carrel and (Unknown)},
    title =     {{The TACACS+ Protocol}},
    pagetotal = 36,
    year =      2016,
    month =     jul,
    day =       8,
    abstract =  {TACACS+ provides Device Administration for routers, network access servers and other networked computing devices via one or more centralized servers. This document describes the protocol that is used by TACACS+.},
}