diff --git a/sys/compat/linuxkpi/common/include/linux/etherdevice.h b/sys/compat/linuxkpi/common/include/linux/etherdevice.h
--- a/sys/compat/linuxkpi/common/include/linux/etherdevice.h
+++ b/sys/compat/linuxkpi/common/include/linux/etherdevice.h
@@ -57,6 +57,12 @@
 	    0x00);
 }
 
+static inline bool
+is_unicast_ether_addr(const u8 * addr)
+{
+	return ((addr[0] & 0x01) == 0x00);
+}
+
 static inline bool
 is_multicast_ether_addr(const u8 * addr)
 {