%% You should probably cite draft-ietf-idr-mpbgp-extension-4map6 instead of this I-D.
@techreport{xie-idr-mpbgp-extension-4map6-09,
    number =    {draft-xie-idr-mpbgp-extension-4map6-09},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-xie-idr-mpbgp-extension-4map6/09/},
    author =    {Chongfeng Xie and Guozhen Dong and Xing Li and Guoliang Han and Zhongfeng Guo},
    title =     {{MP-BGP Extension and the Procedures for IPv4/IPv6 Mapping Advertisement}},
    pagetotal = 16,
    year =      2024,
    month =     feb,
    day =       7,
    abstract =  {This document defines MP-BGP extension and the procedures for IPv4 service delivery in multi-domain IPv6-only underlay networks. It defines a new TLV in the BGP Tunnel Encapsulation attribute to be used in conjunction with the specific AFI/SAFI for IPv4 and IPv6. The behaviors of each type of network (IPv4 and IPv6) are also illustrated. In addition, this document provides the deployment and operation considerations when the extension is deployed.},
}