[libvirt] Libvirtd in listen mode.

Hi, If I start the libvirtd service using the command "service libvirtd start", it is not starting in listen mode. I am stopping the libvirtd service, and then starting in listen mode externally, using the following command: "libvirtd -listen". But, how can I start libvirtd service in listen mode by default (when I issue the command "service libvirtd start")? Regards, Srikanth.