%% You should probably cite rfc4684 instead of this I-D.
@techreport{ietf-l3vpn-rt-constrain-02,
    number =    {draft-ietf-l3vpn-rt-constrain-02},
    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-l3vpn-rt-constrain/02/},
    author =    {Pedro R. Marques and Luyuan Fang and Jim Guichard and Luca Martini and Robert Raszuk and Keyur Patel and Ron Bonica},
    title =     {{Constrained Route Distribution for Border Gateway Protocol/MultiProtocol Label Switching (BGP/MPLS) Internet Protocol (IP) Virtual Private Networks (VPNs)}},
    pagetotal = 14,
    year =      2005,
    month =     jun,
    day =       23,
    abstract =  {This document defines Multi-Protocol BGP (MP-BGP) procedures that allow BGP speakers to exchange Route Target reachability information. This information can be used to build a route distribution graph in order to limit the propagation of Virtual Private Network (VPN) Network Layer Reachability Information (NLRI) between different autonomous systems or distinct clusters of the same autonomous system. This document updates RFC 4364. {[}STANDARDS-TRACK{]}},
}