diff --git a/src/Makefile.am b/src/Makefile.am
index dcc7bfd..c773410 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -36,6 +36,7 @@ bmon_SOURCES = \
 	in_null.c \
 	in_dummy.c \
 	in_proc.c \
+	in_sysctl.c \
 	out_null.c \
 	out_format.c \
 	out_ascii.c \
diff --git a/src/in_sysctl.c b/src/in_sysctl.c
new file mode 100644
index 0000000..79c03fa
--- /dev/null
+++ b/src/in_sysctl.c
@@ -0,0 +1,168 @@
+/*
+ * in_sysctl.c                 sysctl (BSD)
+ *
+ * $Id: in_sysctl.c 20 2004-10-30 22:46:16Z tgr $
+ *
+ * Copyright (c) 2001-2004 Thomas Graf <tgraf@suug.ch>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <bmon/bmon.h>
+#include <bmon/input.h>
+#include <bmon/intf.h>
+#include <bmon/conf.h>
+#include <bmon/node.h>
+#include <bmon/utils.h>
+
+#if defined SYS_BSD
+#include <sys/socket.h>
+#include <net/if.h>
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <net/if_dl.h>
+#include <net/route.h>
+
+static int c_debug = 0;
+
+static void
+sysctl_read(void)
+{
+	int mib[] = {CTL_NET, PF_ROUTE, 0, 0, NET_RT_IFLIST, 0};
+	size_t n;
+	char *buf, *next, *lim;
+
+	if (sysctl(mib, 6, NULL, &n, NULL, 0) < 0)
+		quit("sysctl() failed");
+
+	if (c_debug)
+		fprintf(stderr, "sysctl 1-pass n=%d\n", n);
+
+	buf = xcalloc(1, n);
+
+	if (sysctl(mib, 6, buf, &n, NULL, 0) < 0)
+		quit("sysctl() failed");
+
+	if (c_debug)
+		fprintf(stderr, "sysctl 2-pass n=%d\n", n);
+
+	lim = (buf + n);
+
+	for (next = buf; next < lim; ) {
+		struct if_msghdr *ifm, *nextifm;
+		struct sockaddr_dl *sdl;
+		intf_t *i;
+
+		ifm = (struct if_msghdr *) next;
+		if (ifm->ifm_type != RTM_IFINFO)
+			break;
+
+		next += ifm->ifm_msglen;
+
+		while (next < lim) {
+			nextifm = (struct if_msghdr *) next;
+			if (nextifm->ifm_type != RTM_NEWADDR)
+				break;
+			next += nextifm->ifm_msglen;
+		}
+
+		sdl = (struct sockaddr_dl *) (ifm + 1);
+
+		if (get_show_only_running() && !(ifm->ifm_flags & IFF_UP))
+			continue;
+
+		if(sdl->sdl_family != AF_LINK)
+			continue;
+
+		if (c_debug)
+			fprintf(stderr, "Processing %s\n", sdl->sdl_data);
+
+		i = lookup_intf(get_local_node(), sdl->sdl_data, 0, 0);
+
+		if (NULL == i)
+			continue;
+
+		i->i_rx_bytes.r_total = ifm->ifm_data.ifi_ibytes;
+		i->i_tx_bytes.r_total = ifm->ifm_data.ifi_obytes;
+		i->i_rx_packets.r_total = ifm->ifm_data.ifi_ipackets;
+		i->i_tx_packets.r_total = ifm->ifm_data.ifi_opackets;
+
+		update_attr(i, ERRORS, ifm->ifm_data.ifi_ierrors,
+			ifm->ifm_data.ifi_oerrors, RX_PROVIDED | TX_PROVIDED);
+		update_attr(i, COLLISIONS, 0, ifm->ifm_data.ifi_collisions,
+			TX_PROVIDED);
+		update_attr(i, MULTICAST, ifm->ifm_data.ifi_imcasts, 0, RX_PROVIDED);
+		update_attr(i, DROP, 0, ifm->ifm_data.ifi_iqdrops, TX_PROVIDED);
+
+		notify_update(i);
+		increase_lifetime(i, 1);
+	}
+
+	xfree(buf);
+}
+
+static void
+print_help(void)
+{
+	printf(
+		"sysctl - sysctl statistic collector for BSD and Darwin\n" \
+		"\n" \
+		"  BSD and Darwin statistic collector using sysctl()\n" \
+		"  Author: Thomas Graf <tgraf@suug.ch>\n" \
+		"\n");
+}
+
+static void
+sysctl_set_opts(tv_t *attrs)
+{
+	while (attrs) {
+		if (!strcasecmp(attrs->type, "debug"))
+			c_debug = 1;
+		else if (!strcasecmp(attrs->type, "help")) {
+			print_help();
+			exit(0);
+		}
+		attrs = attrs->next;
+	}
+}
+
+static int
+sysctl_probe(void)
+{
+	size_t n;
+	int mib[] = {CTL_NET, PF_ROUTE, 0, 0, NET_RT_IFLIST, 0};
+	if (sysctl(mib, 6, NULL, &n, NULL, 0) < 0)
+		return 0;
+	return 1;
+}
+
+static struct input_module kstat_ops = {
+	.im_name = "sysctl",
+	.im_read = sysctl_read,
+	.im_set_opts = sysctl_set_opts,
+	.im_probe = sysctl_probe,
+};
+
+static void __init
+sysctl_init(void)
+{
+	register_input_module(&kstat_ops);
+}
+
+#endif