%% You should probably cite rfc8389 instead of this I-D.
@techreport{ietf-softwire-map-mib-13,
    number =    {draft-ietf-softwire-map-mib-13},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-softwire-map-mib/13/},
    author =    {Yu Fu and Sheng Jiang and Bing Liu and Jiang Dong and Yuchi Chen},
    title =     {{Definitions of Managed Objects for Mapping of Address and Port with Encapsulation (MAP-E)}},
    pagetotal = 16,
    year =      2018,
    month =     may,
    day =       29,
    abstract =  {This memo defines a portion of the Management Information Base (MIB) for Mapping of Address and Port with Encapsulation (MAP-E) for use with network management protocols.},
}