%% You should probably cite rfc8614 instead of this I-D.
@techreport{ietf-bess-bgp-vpls-control-flags-08,
    number =    {draft-ietf-bess-bgp-vpls-control-flags-08},
    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-bess-bgp-vpls-control-flags/08/},
    author =    {Ravi Singh and Kireeti Kompella and Senad Palislamovic},
    title =     {{Updated Processing of Control Flags for BGP Virtual Private LAN Service (VPLS)}},
    pagetotal = 9,
    year =      2019,
    month =     apr,
    day =       19,
    abstract =  {This document updates the meaning of the Control Flags field in the "Layer2 Info Extended Community" used for BGP Virtual Private LAN Service (VPLS) Network Layer Reachability Information (NLRI) as defined in RFC 4761. This document updates RFC 4761.},
}