%% You should probably cite rfc8614 instead of this I-D.
@techreport{ietf-bess-bgp-vpls-control-flags-06,
    number =    {draft-ietf-bess-bgp-vpls-control-flags-06},
    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/06/},
    author =    {Ravi Singh and Kireeti Kompella and Senad Palislamovic},
    title =     {{Updated processing of control flags for BGP VPLS}},
    pagetotal = 8,
    year =      2018,
    month =     aug,
    day =       17,
    abstract =  {This document updates the meaning of the "control flags" fields inside the "layer2 info extended community" used for BGP-VPLS NLRI as defined in RFC4761. If approved, this document updates RFC4761.},
}