%% You should probably cite draft-xu-virtual-subnet-11 instead of this revision.
@techreport{xu-virtual-subnet-09,
    number =    {draft-xu-virtual-subnet-09},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-xu-virtual-subnet/09/},
    author =    {Xiaohu Xu and Susan Hares and Fan Yongbing and Christian Jacquenet},
    title =     {{Virtual Subnet: A L3VPN-based Subnet Extension Solution}},
    pagetotal = 17,
    year =      2012,
    month =     oct,
    day =       15,
    abstract =  {This document describes a Layer3 Virtual Private Network (L3VPN)- based subnet extension solution referred to as Virtual Subnet, which mainly reuses existing Border Gateway Protocol (BGP)/Multi-Protocol Label Switch (MPLS) IP Virtual Private Network (VPN){[}RFC4364{]} and Address Resolution Protocol(ARP)/Neighbor Discovery (ND) proxy {[}RFC925{]}{[}RFC1027{]}{[}RFC4389{]}technologies. Virtual Subnet provides a scalable approach for interconnecting cloud data centers.},
}