diff --git a/extensions/ebt_limit.c b/extensions/ebt_limit.c
new file mode 100644
index 0000000..02b8f77
--- /dev/null
+++ b/extensions/ebt_limit.c
@@ -0,0 +1,219 @@
+/* Shared library add-on to ebtables to add limit support.
+ *
+ * Swipted from iptables' limit match.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+#include "../include/ebtables_u.h"
+#include <linux/netfilter_bridge/ebt_limit.h>
+
+#define EBT_LIMIT_AVG	"3/hour"
+#define EBT_LIMIT_BURST	5
+
+/* from iptables.c */
+#include <errno.h>
+int
+string_to_number(const char *s, unsigned int min, unsigned int max,
+		 unsigned int *ret)
+{
+	long number;
+	char *end;
+
+	/* Handle hex, octal, etc. */
+	errno = 0;
+	number = strtol(s, &end, 0);
+	if (*end == '\0' && end != s) {
+		/* we parsed a number, let's see if we want this */
+		if (errno != ERANGE && min <= number && number <= max) {
+			*ret = number;
+			return 0;
+		}
+	}
+	return -1;
+}
+
+#define FLAG_LIMIT		0x01
+#define FLAG_LIMIT_BURST	0x02
+
+#define ARG_LIMIT		'1'
+#define ARG_LIMIT_BURST		'2'
+
+static struct option opts[] =
+{
+	{ "limit",		required_argument, 0, ARG_LIMIT },
+	{ "limit-burst",	required_argument, 0, ARG_LIMIT_BURST },
+	{ 0 }
+};
+
+static void print_help(void)
+{
+	printf(
+"limit options:\n"
+"--limit avg			max average match rate: default "EBT_LIMIT_AVG"\n"
+"                                [Packets per second unless followed by \n"
+"                                /sec /minute /hour /day postfixes]\n"
+"--limit-burst number		number to match in a burst, -1 < number < 10001,\n"
+"                                default %u\n"
+"\n", EBT_LIMIT_BURST);
+}
+
+static int parse_rate(const char *rate, u_int32_t *val)
+{
+	const char *delim;
+	u_int32_t r;
+	u_int32_t mult = 1;  /* Seconds by default. */
+
+	delim = strchr(rate, '/');
+	if (delim) {
+		if (strlen(delim+1) == 0)
+			return 0;
+
+		if (strncasecmp(delim+1, "second", strlen(delim+1)) == 0)
+			mult = 1;
+		else if (strncasecmp(delim+1, "minute", strlen(delim+1)) == 0)
+			mult = 60;
+		else if (strncasecmp(delim+1, "hour", strlen(delim+1)) == 0)
+			mult = 60*60;
+		else if (strncasecmp(delim+1, "day", strlen(delim+1)) == 0)
+			mult = 24*60*60;
+		else
+			return 0;
+	}
+	r = atoi(rate);
+	if (!r)
+		return 0;
+
+	/* This would get mapped to infinite (1/day is minimum they
+	   can specify, so we're ok at that end). */
+	if (r / mult > EBT_LIMIT_SCALE)
+		return 0;
+
+	*val = EBT_LIMIT_SCALE * mult / r;
+	return 1;
+}
+
+/* Initialize the match. */
+static void init(struct ebt_entry_match *m)
+{
+	struct ebt_limit_info *r = (struct ebt_limit_info *)m->data;
+
+	parse_rate(EBT_LIMIT_AVG, &r->avg);
+	r->burst = EBT_LIMIT_BURST;
+}
+
+/* FIXME: handle overflow:
+	if (r->avg*r->burst/r->burst != r->avg)
+		exit_error(PARAMETER_PROBLEM,
+			   "Sorry: burst too large for that avg rate.\n");
+*/
+
+static int parse(int c, char **argv, int argc,
+      const struct ebt_u_entry *entry,
+      unsigned int *flags,
+      struct ebt_entry_match **match)
+{
+	struct ebt_limit_info *r = (struct ebt_limit_info *)(*match)->data;
+	unsigned int num;
+
+	switch(c) {
+	case ARG_LIMIT:
+		check_option(flags, FLAG_LIMIT);
+		if (check_inverse(optarg))
+			print_error("Unexpected `!' after --limit");
+		if (!parse_rate(optarg, &r->avg))
+			print_error("bad rate `%s'", optarg);
+		break;
+
+	case ARG_LIMIT_BURST:
+		check_option(flags, FLAG_LIMIT_BURST);
+		if (check_inverse(optarg))
+			print_error("Unexpected `!' after --limit-burst");
+
+		if (string_to_number(optarg, 0, 10000, &num) == -1)
+			print_error("bad --limit-burst `%s'", optarg);
+		r->burst = num;
+		break;
+
+	default:
+		return 0;
+	}
+
+	return 1;
+}
+
+static void final_check(unsigned int flags)
+{
+	/* empty */
+}
+
+struct rates
+{
+	const char *name;
+	u_int32_t mult;
+};
+
+static struct rates g_rates[] =
+{
+	{ "day", EBT_LIMIT_SCALE*24*60*60 },
+	{ "hour", EBT_LIMIT_SCALE*60*60 },
+	{ "min", EBT_LIMIT_SCALE*60 },
+	{ "sec", EBT_LIMIT_SCALE }
+};
+
+static void print_rate(u_int32_t period)
+{
+	unsigned int i;
+
+	for (i = 1; i < sizeof(g_rates)/sizeof(struct rates); i++)
+		if (period > g_rates[i].mult ||
+		    g_rates[i].mult/period < g_rates[i].mult%period)
+			break;
+
+	printf("%u/%s ", g_rates[i-1].mult / period, g_rates[i-1].name);
+}
+
+/* Prints out the matchinfo. */
+static void
+print(const struct ebt_u_entry *entry, const struct ebt_entry_match *match)
+{
+	struct ebt_limit_info *r = (struct ebt_limit_info *)match->data;
+
+	printf("limit: avg "); print_rate(r->avg);
+	printf("burst %u ", r->burst);
+}
+
+static int compare(const struct ebt_entry_match* m1, const struct ebt_entry_match *m2)
+{
+	struct ebt_limit_info* li1 = (struct ebt_limit_info*)m1->data;
+	struct ebt_limit_info* li2 = (struct ebt_limit_info*)m2->data;
+
+	if (li1->avg != li2->avg)
+		return 0;
+
+	if (li1->burst != li2->burst)
+		return 0;
+
+	return 1;
+}
+
+static struct ebt_u_match limit_match =
+{
+	.name		EBT_LIMIT_MATCH,
+	.size		sizeof(struct ebt_limit_info),
+	.help		print_help,
+	.init		init,
+	.parse		parse,
+	.final_check	final_check,
+	.print		print,
+	.compare	compare,
+	.extra_ops	opts,
+};
+
+static void _init(void) __attribute((constructor));
+static void _init(void)
+{
+	register_match(&limit_match);
+}