--- libaitio/src/Attic/tools.c	2011/06/07 11:49:39	1.5
+++ libaitio/src/Attic/tools.c	2011/10/14 07:28:16	1.5.4.1
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: tools.c,v 1.5 2011/06/07 11:49:39 misho Exp $
+* $Id: tools.c,v 1.5.4.1 2011/10/14 07:28:16 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -294,4 +294,27 @@ io_FreeNullTerm(char *** __restrict arr)
 		free(*arr);
 		*arr = NULL;
 	}
+}
+
+/*
+ * io_ether_ntoa() Convert ethernet address to string
+ * @n = ethernet address structure, like struct ether_addr
+ * @a = string
+ * @len = string length
+ * return: NULL error or !=NULL string a
+ */
+inline char *
+io_ether_ntoa(const struct io_ether_addr *n, char * __restrict a, int len)
+{
+	if (!n || !a)
+		return NULL;
+
+	memset(a, 0, len);
+	if (snprintf(a, len, "%02x:%02x:%02x:%02x:%02x:%02x", 
+			n->ether_addr_octet[0], n->ether_addr_octet[1], 
+			n->ether_addr_octet[2], n->ether_addr_octet[3], 
+			n->ether_addr_octet[4], n->ether_addr_octet[5]) < 17)
+		return NULL;
+
+	return a;
 }