diff --git a/src/include/lwip/opt.h b/src/include/lwip/opt.h
index 71a465f0..1abdf294 100644
--- a/src/include/lwip/opt.h
+++ b/src/include/lwip/opt.h
@@ -2529,6 +2529,15 @@
 #ifdef __DOXYGEN__
 #define LWIP_HOOK_MEMP_AVAILABLE(memp_t_type)
 #endif
+
+/**
+ * LWIP_HOOK_UNKNOWN_ETH_PROTOCOL(pbuf, netif):
+ * Called from ethernet_input() when an unknown eth type is encountered.
+ * Return ERR_OK if packet is accepted, any error code otherwise.
+ */
+#ifdef __DOXYGEN__
+#define LWIP_HOOK_UNKNOWN_ETH_PROTOCOL(pbuf, netif)
+#endif
 /**
  * @}
  */
diff --git a/src/netif/ethernet.c b/src/netif/ethernet.c
index 57c3f117..b84fcdc7 100644
--- a/src/netif/ethernet.c
+++ b/src/netif/ethernet.c
@@ -208,10 +208,17 @@ ethernet_input(struct pbuf *p, struct netif *netif)
 #endif /* LWIP_IPV6 */
 
     default:
-      ETHARP_STATS_INC(etharp.proterr);
-      ETHARP_STATS_INC(etharp.drop);
-      MIB2_STATS_NETIF_INC(netif, ifinunknownprotos);
-      goto free_and_return;
+#ifdef LWIP_HOOK_UNKNOWN_ETH_PROTOCOL
+      if(LWIP_HOOK_UNKNOWN_ETH_PROTOCOL(p, netif) != ERR_OK) {
+#endif
+        ETHARP_STATS_INC(etharp.proterr);
+        ETHARP_STATS_INC(etharp.drop);
+        MIB2_STATS_NETIF_INC(netif, ifinunknownprotos);
+        goto free_and_return;
+#ifdef LWIP_HOOK_UNKNOWN_ETH_PROTOCOL
+      }
+      break;
+#endif
   }
 
   /* This means the pbuf is freed or consumed,