%% You should probably cite rfc3142 instead of this I-D.
@techreport{ietf-ngtrans-tcpudp-relay-04,
    number =    {draft-ietf-ngtrans-tcpudp-relay-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-ietf-ngtrans-tcpudp-relay/04/},
    author =    {Kazu Yamamoto and Jun-ichiro Itoh},
    title =     {{An IPv6-to-IPv4 Transport Relay Translator}},
    pagetotal = 11,
    year =      2001,
    month =     apr,
    day =       11,
    abstract =  {The document describes an IPv6-to-IPv4 transport relay translator (TRT). This memo provides information for the Internet community.},
}