cleanups in kernel interface code

added proper traffic selector to string conversion
some cleanups here & there

src/charon/queues/send_queue.c

@@ -112,8 +112,8 @@ static void add(private_send_queue_t *this, packet_t *packet)
 	src = packet->get_source(packet);
 	dst = packet->get_destination(packet);
 	this->logger->log(this->logger, CONTROL, "sending packet: from %s:%d to %s:%d",
-					  src->get_address(src), src->get_port(src),
-					  dst->get_address(dst), dst->get_port(dst));
+					  src->get_string(src), src->get_port(src),
+					  dst->get_string(dst), dst->get_port(dst));
 	
 	pthread_mutex_lock(&this->mutex);
 	this->list->insert_last(this->list, packet);