%% You should probably cite draft-ietf-nvo3-vxlan-gpe instead of this I-D.
@techreport{quinn-vxlan-gpe-02,
    number =    {draft-quinn-vxlan-gpe-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-quinn-vxlan-gpe/02/},
    author =    {Puneet Agarwal and Rex Fernando and Darrel Lewis and Larry Kreeger and Paul Quinn and Lucy Yong and Xiaohu Xu and Michael Smith and Navindra Yadav and Uri Elzur},
    title =     {{Generic Protocol Extension for VXLAN}},
    pagetotal = 15,
    year =      2013,
    month =     dec,
    day =       17,
    abstract =  {This draft describes a mechanism for adding multi-protocol support to Virtual eXtensible Local Area Network (VXLAN). Protocol identification is carried in the VXLAN header and is used to describe the encapsulated payload.},
}