%% You should probably cite rfc7432 instead of this I-D.
@techreport{ietf-l2vpn-evpn-07,
    number =    {draft-ietf-l2vpn-evpn-07},
    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-l2vpn-evpn/07/},
    author =    {Ali Sajassi and Rahul Aggarwal and Dr. Nabil N. Bitar and Aldrin Isaac and Jim Uttaro},
    title =     {{BGP MPLS Based Ethernet VPN}},
    pagetotal = 50,
    year =      2014,
    month =     may,
    day =       7,
    abstract =  {This document describes procedures for BGP MPLS based Ethernet VPNs (EVPN).},
}