%% You should probably cite draft-ietf-6man-enhanced-vpn-vtn-id instead of this I-D.
@techreport{dong-6man-enhanced-vpn-vtn-id-00,
    number =    {draft-dong-6man-enhanced-vpn-vtn-id-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-dong-6man-enhanced-vpn-vtn-id/00/},
    author =    {Jie Dong and Zhenbin Li},
    title =     {{Carrying Virtual Transport Network (VTN) Identifier in IPv6 Extensison Header for Enhanced VPN}},
    pagetotal = 7,
    year =      ** No value found for 'doc.pub_date.year' **,
    month =     ** No value found for 'doc.pub_date' **,
    day =       ** No value found for 'doc.pub_date.day' **,
    abstract =  {This document proposes a new option type to carry virtual transport network identifier (VTN ID) in the IPv6 extensions headers to identify the virtual transport network the packet belongs to. The procedure of processing the VTN option is also specified. This provides a scalable solution for data plane encapsulation of enhanced VPN (VPN+) as described in I-D.ietf-teas-enhanced-vpn. One typical use case of VPN+ is to provide transport network slicing in 5G, while it could also be used in more general cases.},
}