%% You should probably cite rfc2764 instead of this I-D.
@techreport{gleeson-vpn-framework-03,
    number =    {draft-gleeson-vpn-framework-03},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-gleeson-vpn-framework/03/},
    author =    {Dr. Arthur Y. Lin and Andrew G. Malis and Dr. Juha Heinanen and Bryan Gleeson and Dr. Grenville Armitage},
    title =     {{A Framework for IP Based Virtual Private Networks}},
    pagetotal = 62,
    year =      1999,
    month =     nov,
    day =       15,
    abstract =  {This document describes a framework for Virtual Private Networks (VPNs) running across IP backbones. This memo provides information for the Internet community.},
}