blob: 75be3855474363e83fb0be068df81f7b33bca2ad [file] [log] [blame]
wdenk57451852001-09-06 22:25:14 +00001/*
2 * (C) Copyright 2001
3 * Murray Jensen <Murray.Jensen@cmst.csiro.au>
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#include <stdio.h>
25#include <stdlib.h>
26#include <unistd.h>
27#include <time.h>
28
29int
30main(int argc, char *argv[])
31{
32 unsigned long ethaddr_low, ethaddr_high;
33
34 srandom(time(0) | getpid());
35
36 /*
37 * setting the 2nd LSB in the most significant byte of
38 * the address makes it a locally administered ethernet
39 * address
40 */
41 ethaddr_high = (random() & 0xfeff) | 0x0200;
42 ethaddr_low = random();
43
44 printf("%02lx:%02lx:%02lx:%02lx:%02lx:%02lx\n",
45 ethaddr_high >> 8, ethaddr_high & 0xff,
46 ethaddr_low >> 24, (ethaddr_low >> 16) & 0xff,
47 (ethaddr_low >> 8) & 0xff, ethaddr_low & 0xff);
48
49 return (0);
50}