Moving eth_type to iana.h was incorrect - these are assigned by IEEE. IANA published a document containing these numbers, but does not assign them. I didn't see that in the first place :-(

Now we have ieee.h, too.

src/include/lwip/prot/ethernet.h

@@ -38,7 +38,7 @@
 #define LWIP_HDR_PROT_ETHERNET_H
 
 #include "lwip/arch.h"
-#include "lwip/prot/iana.h"
+#include "lwip/prot/ieee.h"
 
 #ifdef __cplusplus
 extern "C" {

src/include/lwip/prot/iana.h

@@ -86,44 +86,4 @@ enum lwip_iana_port_number {
   LWIP_IANA_PORT_SEQURE_MQTT = 8883
 };
 
-/**
- * @ingroup iana
- * A list of often ethtypes (although lwIP does not use all of them).
- * https://www.iana.org/assignments/ieee-802-numbers/ieee-802-numbers.xhtml#ieee-802-numbers-1
- */
-enum lwip_iana_eth_type {
-  /** Internet protocol v4 */
-  ETHTYPE_IP        = 0x0800U,
-  /** Address resolution protocol */
-  ETHTYPE_ARP       = 0x0806U, 
-  /** Wake on lan */
-  ETHTYPE_WOL       = 0x0842U,
-  /** RARP */
-  ETHTYPE_RARP      = 0x8035U,
-  /** Virtual local area network */
-  ETHTYPE_VLAN      = 0x8100U,
-  /** Internet protocol v6 */
-  ETHTYPE_IPV6      = 0x86DDU,
-  /** PPP Over Ethernet Discovery Stage */
-  ETHTYPE_PPPOEDISC = 0x8863U,
-  /** PPP Over Ethernet Session Stage */
-  ETHTYPE_PPPOE     = 0x8864U,
-  /** Jumbo Frames */
-  ETHTYPE_JUMBO     = 0x8870U,
-  /** Process field network */
-  ETHTYPE_PROFINET  = 0x8892U,
-  /** Ethernet for control automation technology */
-  ETHTYPE_ETHERCAT  = 0x88A4U,
-  /** Link layer discovery protocol */
-  ETHTYPE_LLDP      = 0x88CCU,
-  /** Serial real-time communication system */
-  ETHTYPE_SERCOS    = 0x88CDU,
-  /** Media redundancy protocol */
-  ETHTYPE_MRP       = 0x88E3U,
-  /** Precision time protocol */
-  ETHTYPE_PTP       = 0x88F7U,
-  /** Q-in-Q, 802.1ad */
-  ETHTYPE_QINQ      = 0x9100U
-};
-
 #endif /* LWIP_HDR_PROT_IANA_H */

src/include/lwip/prot/ieee.h

@@ -0,0 +1,83 @@
+/**
+ * @file
+ * IEEE assigned numbers
+ *
+ * @defgroup ieee IEEE assigned numbers
+ * @ingroup infrastructure
+ */
+
+/*
+ * Copyright (c) 2017 Dirk Ziegelmeier.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Dirk Ziegelmeier <dziegel@gmx.de>
+ *
+ */
+
+#ifndef LWIP_HDR_PROT_IEEE_H
+#define LWIP_HDR_PROT_IEEE_H
+
+/**
+ * @ingroup ieee
+ * A list of often ethtypes (although lwIP does not use all of them).
+ */
+enum lwip_ieee_eth_type {
+  /** Internet protocol v4 */
+  ETHTYPE_IP        = 0x0800U,
+  /** Address resolution protocol */
+  ETHTYPE_ARP       = 0x0806U, 
+  /** Wake on lan */
+  ETHTYPE_WOL       = 0x0842U,
+  /** RARP */
+  ETHTYPE_RARP      = 0x8035U,
+  /** Virtual local area network */
+  ETHTYPE_VLAN      = 0x8100U,
+  /** Internet protocol v6 */
+  ETHTYPE_IPV6      = 0x86DDU,
+  /** PPP Over Ethernet Discovery Stage */
+  ETHTYPE_PPPOEDISC = 0x8863U,
+  /** PPP Over Ethernet Session Stage */
+  ETHTYPE_PPPOE     = 0x8864U,
+  /** Jumbo Frames */
+  ETHTYPE_JUMBO     = 0x8870U,
+  /** Process field network */
+  ETHTYPE_PROFINET  = 0x8892U,
+  /** Ethernet for control automation technology */
+  ETHTYPE_ETHERCAT  = 0x88A4U,
+  /** Link layer discovery protocol */
+  ETHTYPE_LLDP      = 0x88CCU,
+  /** Serial real-time communication system */
+  ETHTYPE_SERCOS    = 0x88CDU,
+  /** Media redundancy protocol */
+  ETHTYPE_MRP       = 0x88E3U,
+  /** Precision time protocol */
+  ETHTYPE_PTP       = 0x88F7U,
+  /** Q-in-Q, 802.1ad */
+  ETHTYPE_QINQ      = 0x9100U
+};
+
+#endif /* LWIP_HDR_PROT_IEEE_H */