Initial revision

1 files changed, 50 insertions, 0 deletions

diff --git a/tools/gen_eth_addr.c b/tools/gen_eth_addr.c
new file mode 100644
index 0000000..75be385
--- /dev/null
+++ b/tools/gen_eth_addr.c
@@ -0,0 +1,50 @@
+/*
+ * (C) Copyright 2001
+ * Murray Jensen <Murray.Jensen@cmst.csiro.au>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+
+int
+main(int argc, char *argv[])
+{
+    unsigned long ethaddr_low, ethaddr_high;
+
+    srandom(time(0) | getpid());
+
+    /*
+     * setting the 2nd LSB in the most significant byte of
+     * the address makes it a locally administered ethernet
+     * address
+     */
+    ethaddr_high = (random() & 0xfeff) | 0x0200;
+    ethaddr_low = random();
+
+    printf("%02lx:%02lx:%02lx:%02lx:%02lx:%02lx\n",
+	ethaddr_high >> 8, ethaddr_high & 0xff,
+	ethaddr_low >> 24, (ethaddr_low >> 16) & 0xff,
+	(ethaddr_low >> 8) & 0xff, ethaddr_low & 0xff);
+
+    return (0);
+}