@techreport{liu-sunset4-gapanalysis-00,
    number =    {draft-liu-sunset4-gapanalysis-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-liu-sunset4-gapanalysis/00/},
    author =    {Will (Shucheng) LIU and Weiping Xu and Cathy Zhou and Tina Tsou (Ting ZOU) and Simon Perreault and Rong Gu and Chen Li},
    title =     {{Gap Analysis for IPv4 Sunset}},
    pagetotal = 11,
    year =      2018,
    month =     oct,
    day =       22,
    abstract =  {Sunsetting IPv4 refers to the process of turning off IPv4 definitively. It can be seen as the final phase of the transition to IPv6. This memo enumerates difficulties arising when sunsetting IPv4, and identifies the gaps requiring additional work.},
}