diff --git a/sys/net/ethernet.h b/sys/net/ethernet.h
index 77773eee04a7..f5e49ef63a4a 100644
--- a/sys/net/ethernet.h
+++ b/sys/net/ethernet.h
@@ -98,6 +98,11 @@ struct ether_vlan_header {
 	((((((pri) & 7) << 1) | ((cfi) & 1)) << 12) | ((vlid) & EVL_VLID_MASK))
 
 /*
+ * Ethernet protocol types.
+ *
+ * A public list is available from the IEEE Ragistration Authority:
+ *	https://standards.ieee.org/products-services/regauth/
+ *
  *  NOTE: 0x0000-0x05DC (0..1500) are generally IEEE 802.3 length fields.
  *  However, there are some conflicts.
  */
@@ -347,7 +352,14 @@ struct ether_vlan_header {
 #define	ETHERTYPE_PPPOE		0x8864	/* PPP Over Ethernet Session Stage */
 #define	ETHERTYPE_LANPROBE	0x8888	/* HP LanProbe test? */
 #define	ETHERTYPE_PAE		0x888e	/* EAPOL PAE/802.1x */
+#define	ETHERTYPE_PROFINET	0x8892	/* PROFINET RT Protocol */
+#define	ETHERTYPE_AOE		0x88a2	/* ATA Protocol */
+#define	ETHERTYPE_ETHERCAT	0x88a4	/* EtherCat Protocol */
+#define	ETHERTYPE_FCOE		0x8906	/* Fibre Channel over Ethernet */
 #define	ETHERTYPE_QINQ		0x88A8	/* 802.1ad VLAN stacking */
+#define	ETHERTYPE_LLDP		0x88CC	/* Link Layer Discovery Protocol */
+#define	ETHERTYPE_MACSEC	0x88e5	/* 802.1AE MAC Security */
+#define	ETHERTYPE_PBB		0x88e7	/* 802.1Q Provider Backbone Bridges */
 #define	ETHERTYPE_LOOPBACK	0x9000	/* Loopback: used to test interfaces */
 #define	ETHERTYPE_8021Q9100	0x9100	/* IEEE 802.1Q stacking (proprietary) */
 #define	ETHERTYPE_LBACK		ETHERTYPE_LOOPBACK	/* DEC MOP loopback */