%% You should probably cite draft-boucadair-dispatch-ipv6-atypes-01 instead of this revision.
@techreport{boucadair-dispatch-ipv6-atypes-00,
    number =    {draft-boucadair-dispatch-ipv6-atypes-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-boucadair-dispatch-ipv6-atypes/00/},
    author =    {Mohamed Boucadair and Yoann Noisette and Andrew Allen},
    title =     {{The atypes media feature tag for Session Initiation Protocol (SIP)}},
    pagetotal = 16,
    year =      2009,
    month =     jul,
    day =       27,
    abstract =  {This specification defines a new media feature tag called atypes. This new media feature tag indicates the IP address type capabilities of the UA (User Agent) and can aid the routing process and ease the invocation of required functions when heterogeneous (i.e. IPv4 and IPv6) parties are involved in a given SIP session.},
}