%% You should probably cite draft-wang-idr-vpn-prefix-orf instead of this I-D.
@techreport{wang-idr-rd-orf-04,
    number =    {draft-wang-idr-rd-orf-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-wang-idr-rd-orf/04/},
    author =    {Wei Wang and Aijun Wang and Haibo Wang and Gyan Mishra and Shunwan Zhuang and Jie Dong},
    title =     {{Route Distinguisher Outbound Route Filter (RD-ORF) for BGP-4}},
    pagetotal = 15,
    year =      2020,
    month =     oct,
    day =       30,
    abstract =  {This draft defines a new Outbound Route Filter (ORF) type, called the Route Distinguisher ORF (RD-ORF). RD-ORF is applicable when the routers do not exchange VPN routing information directly (e.g. routers in single-domain connect via Route Reflector, or routers in Option B/Option AB/Option C cross-domain scenario).},
}