@@ -27,19 +27,27 @@
  *	  @ref networkInterfaces.
  *
  * Possible keys are:
  *
  *   * @ref OFNetworkInterfaceAddresses
+ *   * @ref OFNetworkInterfaceEthernetAddress
  */
 typedef OFConstantString *OFNetworkInterfaceInfoKey;
 
 /**
  * @brief The addresses of a network interface.
  *
  * This maps to an @ref OFData of @ref OFSocketAddress.
  */
 extern OFConstantString *const OFNetworkInterfaceAddresses;
+
+/**
+ * @brief The Ethernet address of a network interface.
+ *
+ * This maps to an @ref OFData.
+ */
+extern OFConstantString *const OFNetworkInterfaceEthernetAddress;
 #endif
 
 /**
  * @class OFSystemInfo OFSystemInfo.h ObjFW/OFSystemInfo.h
  *