+ /* tnl_port_should_receive() examines the 'tunnel.ip_dst' field to
+ * determine the presence of the tunnel metadata. However, since tunnels'
+ * datapath port numbers are different from the non-tunnel ports, and we
+ * always unwildcard the 'in_port', we do not need to unwildcard
+ * the 'tunnel.ip_dst' for non-tunneled packets. */