%% You should probably cite draft-liu-intarea-ipipv4-tunnel-yang-02 instead of this revision.
@techreport{liu-intarea-ipipv4-tunnel-yang-00,
    number =    {draft-liu-intarea-ipipv4-tunnel-yang-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-intarea-ipipv4-tunnel-yang/00/},
    author =    {Ying Liu and Adam Mate Foldes and Guangying Zheng and Zitao Wang and Yan Zhuang},
    title =     {{Yang Data Model for IPIPv4 Tunnel}},
    pagetotal = 39,
    year =      2015,
    month =     oct,
    day =       15,
    abstract =  {This document defines a YANG data model for the management of IPv4 or IPv6 over IPv4 tunnels. The data model covers configuration data, operational state data and RPC execution commands.},
}