%% You should probably cite draft-ietf-6man-enhanced-vpn-vtn-id instead of this I-D.
@techreport{dong-6man-enhanced-vpn-vtn-id-05,
    number =    {draft-dong-6man-enhanced-vpn-vtn-id-05},
    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/05/},
    author =    {Jie Dong and Zhenbin Li and Chongfeng Xie and Chenhao Ma and Gyan Mishra},
    title =     {{Carrying Virtual Transport Network Identifier in IPv6 Extension Header}},
    pagetotal = 8,
    year =      2021,
    month =     sep,
    day =       9,
    abstract =  {A Virtual Transport Network (VTN) is a virtual network which has a customized network topology and a set of dedicated or shared network resources allocated from the physical network. A VTN can be used as the underlay for one or a group of overlay VPNs to provide enhanced VPN (VPN+) services. In packet forwarding, some fields in the data packet needs to be used to identify the VTN the packet belongs to, so that the VTN-specific processing can be performed on each node the packet traverses. This document proposes a new Hop-by-Hop option of IPv6 extension header to carry the VTN Resource ID, which is used to identify the set of network resources allocated to a VTN for packet processing. The procedure for processing the VTN option is also specified.},
}