%% You should probably cite draft-ietf-v6ops-ipv6-roaming-analysis instead of this I-D.
@techreport{chen-v6ops-ipv6-roaming-analysis-00,
    number =    {draft-chen-v6ops-ipv6-roaming-analysis-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-chen-v6ops-ipv6-roaming-analysis/00/},
    author =    {Gang Chen and DENG Hui},
    title =     {{IPv6 Roaming Behavior Analysis}},
    pagetotal = 7,
    year =      2013,
    month =     jul,
    day =       8,
    abstract =  {This document intends to enumerate failed cases when a IPv6 subscriber roams into visited network areas. The investigations on those failed cases reveal the causes in order to notice improper configurations, equipment's incomplete functions or inconsistent IPv6 strategy.},
}