+ /*
+ * The output feature bitmap always have at least the output feature bit set
+ * for a normal L2 interface (or all 0's if the interface is changed from L2
+ * to L3 mode). So if next_nodes specified is that from the l2-output node and
+ * the bitmap is all clear except output feature bit, we know there is no more
+ * feature and will fall through to output packet. If next_nodes is from a L2
+ * output feature node (and not l2-output), we always want to get the node for
+ * the next L2 output feature, including the last feature being interface-
+ * output node to output packet.
+ */
+ if ((next_nodes != &l2output_main.next_nodes)
+ || ((feature_bitmap & ~L2OUTPUT_FEAT_OUTPUT) != 0))