+ /* NX1.0(1,514), NX1.1(1,514), OF1.2+(1,11). Invalid port.
+ * [ A non-standard error (1,514), formerly
+ * OFPERR_NXBRC_BAD_IN_PORT is used for OpenFlow 1.0 and 1.1 as there
+ * seems to be no appropriste error code defined the specifications. ] */