%% You should probably cite draft-xu-intarea-ip-in-udp-12 instead of this revision.
@techreport{xu-intarea-ip-in-udp-04,
    number =    {draft-xu-intarea-ip-in-udp-04},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-xu-intarea-ip-in-udp/04/},
    author =    {Xiaohu Xu and Yiu Lee and Fan Yongbing},
    title =     {{Encapsulating IP in UDP}},
    pagetotal = 10,
    year =      2016,
    month =     dec,
    day =       20,
    abstract =  {Existing Softwire encapsulation technologies are not adequate for efficient load balancing of Softwire service traffic across IP networks. This document specifies additional Softwire encapsulation technology, referred to as IP-in-UDP (User Datagram Protocol), which can facilitate the load balancing of Softwire service traffic across IP networks.},
}