%% You should probably cite rfc7364 instead of this I-D.
@techreport{ietf-nvo3-overlay-problem-statement-00,
    number =    {draft-ietf-nvo3-overlay-problem-statement-00},
    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-nvo3-overlay-problem-statement/00/},
    author =    {Dr. Thomas Narten and Dinesh Dutt and Luyuan Fang and Eric Gray and Larry Kreeger and Maria Napierala and Murari Sridharan},
    title =     {{Problem Statement: Overlays for Network Virtualization}},
    pagetotal = 20,
    year =      2012,
    month =     sep,
    day =       5,
    abstract =  {This document describes issues associated with providing multi- tenancy in large data center networks that require an overlay-based network virtualization approach to addressing them. A key multi- tenancy requirement is traffic isolation, so that a tenant's traffic is not visible to any other tenant. This isolation can be achieved by assigning one or more virtual networks to each tenant such that traffic within a virtual network is isolated from traffic in other virtual networks. The primary functionality required is provisioning virtual networks, associating a virtual machine's virtual network interface(s) with the appropriate virtual network, and maintaining that association as the virtual machine is activated, migrated and/or deactivated. Use of an overlay-based approach enables scalable deployment on large network infrastructures.},
}