%% You should probably cite draft-li-6man-apn-ipv6-encap instead of this I-D.
@techreport{li-apn-ipv6-encap-00,
    number =    {draft-li-apn-ipv6-encap-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-li-apn-ipv6-encap/00/},
    author =    {Zhenbin Li and Shuping Peng},
    title =     {{Application-aware IPv6 Networking (APN6) Encapsulation}},
    pagetotal = 6,
    year =      2021,
    month =     oct,
    day =       25,
    abstract =  {Application-aware IPv6 Networking (APN6) makes use of IPv6 encapsulation to convey the APN Attribute along with data packets and make the network aware about data flow requirements at different granularity levels. The APN attribute can be encapsulated in the APN header. This document defines the encapsulation of the APN header in the IPv6 data plane.},
}