%% You should probably cite draft-ietf-idr-vpn-prefix-orf instead of this I-D.
@techreport{wang-idr-vpn-prefix-orf-04,
    number =    {draft-wang-idr-vpn-prefix-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-vpn-prefix-orf/04/},
    author =    {Wei Wang and Aijun Wang and Haibo Wang and Gyan Mishra and Shunwan Zhuang and Jie Dong},
    title =     {{VPN Prefix Outbound Route Filter (VPN Prefix ORF) for BGP-4}},
    pagetotal = 21,
    year =      2022,
    month =     oct,
    day =       10,
    abstract =  {This draft defines a new Outbound Route Filter (ORF) type, called the VPN Prefix ORF. The described VPN Prefix ORF mechanism is applicable when the VPN routes from different VRFs are exchanged via one shared BGP session (e.g., routers in a single-domain connect via Route Reflector).},
}