[dbus]How to verify the capability of dbus IPC between machines

[尹YinXiaobiao]

Hi all
     I am a newbie at Dbus and this is my first mail in this maillist.
    By some investigate and look at the source code,I know that dbus
is using socket(tcp & unix domain socket) to transfer data.
    So it is possible for communication between two machines(or VM).

    Now my question is how to vevify this capability by dbus-send command.
    Can anyone give me  a hint?

    Thanks in advance.

ps:
Someone tell me that dbus do not listen on TCP by default,how to
enable TCP listen?