--- libaitio/src/bpf.c	2013/10/21 21:12:42	1.4
+++ libaitio/src/bpf.c	2013/12/04 10:08:41	1.4.16.1
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: bpf.c,v 1.4 2013/10/21 21:12:42 misho Exp $
+* $Id: bpf.c,v 1.4.16.1 2013/12/04 10:08:41 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -65,6 +65,43 @@ io_get1stiface(char *szIface, int iflen)
 	strlcpy(szIface, ifa->ifa_name, iflen);
 	freeifaddrs(ifa);
 	return 0;
+}
+
+/*
+ * io_getmaciface() - Get MAC address from interface name
+ *
+ * @csIface = interface name
+ * @ea = ethernet address
+ * return: -1 error, 0 ok or 1 not found
+ */
+int
+io_getmaciface(const char *csIface, ether_addr_t * __restrict ea)
+{
+	struct ifaddrs *ifa, *ifp;
+	struct sockaddr_dl *dl;
+	int ret = 1;
+
+	if (!csIface || !ea)
+		return -1;
+	else
+		memset(ea, 0, sizeof(ether_addr_t));
+
+	getifaddrs(&ifa);
+	for (ifp = ifa; ifp; ifp = ifp->ifa_next)
+		if (!strcmp(csIface, ifp->ifa_name) && ifp->ifa_addr && 
+				ifp->ifa_addr->sa_family == AF_LINK) {
+			dl = (struct sockaddr_dl*) ifp->ifa_addr;
+			if ((dl->sdl_type == IFT_ETHER || dl->sdl_type == IFT_L2VLAN || 
+					dl->sdl_type == IFT_BRIDGE) && 
+					dl->sdl_alen == ETHER_ADDR_LEN) {
+				memcpy(ea, LLADDR(dl), sizeof(ether_addr_t));
+				ret = 0;
+				break;
+			}
+		}
+	freeifaddrs(ifa);
+
+	return ret;
 }
 
 /*