%% You should probably cite rfc2283 instead of this I-D.
@techreport{ietf-idr-bgp4-multiprotocol-01,
    number =    {draft-ietf-idr-bgp4-multiprotocol-01},
    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-idr-bgp4-multiprotocol/01/},
    author =    {Yakov Rekhter and Tony J. Bates and Ravi Chandra and Dave Katz},
    title =     {{Multiprotocol Extensions for BGP-4}},
    pagetotal = 9,
    year =      1997,
    month =     sep,
    day =       26,
    abstract =  {This document defines extensions to BGP-4 to enable it to carry routing information for multiple Network Layer protocols (e.g., IPv6, IPX, etc...). The extensions are backward compatible - a router that supports the extensions can interoperate with a router that doesn't support the extensions. {[}STANDARDS-TRACK{]}},
}