def domif_setlink(vm, device, operation, options):
        """
        Set the domain link state

        :param vm : domain name
        :param device : domain virtual interface
        :param opration : domain virtual interface state
        :param options : some options like --config

        """

        return virsh.domif_setlink(vm, device, operation, options, debug=True)
    def domif_setlink(vm, device, operation, options):
        """
        Set the domain link state

        :param vm : domain name
        :param device : domain virtual interface
        :param opration : domain virtual interface state
        :param options : some options like --config

        """

        return virsh.domif_setlink(vm, device, operation, options, debug=True)