diff -Nur iproute2-2.4.7-now-ss020116-try/tc/Makefile iproute2-2.4.7-now-ss020116-try-dup/tc/Makefile
--- iproute2-2.4.7-now-ss020116-try/tc/Makefile	2002-01-10 05:08:18.000000000 +0200
+++ iproute2-2.4.7-now-ss020116-try-dup/tc/Makefile	2004-03-29 11:56:15.000000000 +0300
@@ -27,6 +27,7 @@
 #TCMODULES += q_csz.o
 #TCMODULES += q_hpfq.o
 #TCMODULES += q_hfsc.o
+TCMODULES += q_dup.o
 
 TCOBJ += $(TCMODULES)
 
diff -Nur iproute2-2.4.7-now-ss020116-try/tc/q_dup.c iproute2-2.4.7-now-ss020116-try-dup/tc/q_dup.c
--- iproute2-2.4.7-now-ss020116-try/tc/q_dup.c	1970-01-01 02:00:00.000000000 +0200
+++ iproute2-2.4.7-now-ss020116-try-dup/tc/q_dup.c	2004-03-29 12:04:09.000000000 +0300
@@ -0,0 +1,108 @@
+/*
+ * q_dup.c	dup packet
+ *
+ *		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.
+ *
+ * Authors:	Catali(ux aka Dino) BOIE, <catab@deuroconsult.ro>
+ *
+ */
+
+
+/* Temporary, till glibc gets this */
+/* Dup section */
+struct tc_dup_qopt
+{
+	__u32   gap;
+	__u32   limit;
+};
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+
+#include "utils.h"
+#include "tc_util.h"
+
+static void explain(void)
+{
+	fprintf(stderr, "Usage: ... dup [ gap NUMBER ] [ limit NUMBER ]\n");
+}
+
+#define usage() return(-1)
+
+static int dup_parse_opt(struct qdisc_util *qu, int argc, char **argv, struct nlmsghdr *n)
+{
+	int ok=0;
+	struct tc_dup_qopt opt;
+
+	memset(&opt, 0, sizeof(opt));
+
+	while (argc > 0) {
+		if (strcmp(*argv, "limit") == 0) {
+			NEXT_ARG();
+			if (get_size(&opt.limit, *argv)) {
+				fprintf(stderr, "Illegal \"limit\"\n");
+				return -1;
+			}
+			ok++;
+		} else if (strcmp(*argv, "gap") == 0) {
+			NEXT_ARG();
+			if (get_size(&opt.gap, *argv)) {
+				fprintf(stderr, "Illegal \"gap\"\n");
+				return -1;
+			}
+			ok++;
+		} else if (strcmp(*argv, "help") == 0) {
+			explain();
+			return -1;
+		} else {
+			fprintf(stderr, "What is \"%s\"?\n", *argv);
+			explain();
+			return -1;
+		}
+		argc--; argv++;
+	}
+
+	if (ok)
+		addattr_l(n, 1024, TCA_OPTIONS, &opt, sizeof(opt));
+	return 0;
+}
+
+static int dup_print_opt(struct qdisc_util *qu, FILE *f, struct rtattr *opt)
+{
+	struct tc_dup_qopt *qopt;
+
+	if (opt == NULL)
+		return 0;
+
+	if (RTA_PAYLOAD(opt)  < sizeof(*qopt))
+		return -1;
+	qopt = RTA_DATA(opt);
+
+	fprintf (f, "limit %up gap %up", qopt -> limit, qopt -> gap);
+	return 0;
+}
+
+static int dup_print_xstats(struct qdisc_util *qu, FILE *f, struct rtattr *xstats)
+{
+	return 0;
+}
+
+
+struct qdisc_util dup_util = {
+	NULL,
+	"dup",
+	dup_parse_opt,
+	dup_print_opt,
+	dup_print_xstats,
+};
diff -Nur iproute2-2.4.7-now-ss020116-try/tc/tc_qdisc.c iproute2-2.4.7-now-ss020116-try-dup/tc/tc_qdisc.c
--- iproute2-2.4.7-now-ss020116-try/tc/tc_qdisc.c	2002-01-15 13:15:23.000000000 +0200
+++ iproute2-2.4.7-now-ss020116-try-dup/tc/tc_qdisc.c	2004-03-29 11:56:56.000000000 +0300
@@ -36,7 +36,7 @@
 	fprintf(stderr, "\n");
 	fprintf(stderr, "       tc qdisc show [ dev STRING ] [ingress]\n");
 	fprintf(stderr, "Where:\n");
-	fprintf(stderr, "QDISC_KIND := { [p|b]fifo | tbf | prio | cbq | red | etc. }\n");
+	fprintf(stderr, "QDISC_KIND := { [p|b]fifo | tbf | prio | cbq | red | dup | etc. }\n");
 	fprintf(stderr, "OPTIONS := ... try tc qdisc add <desired QDISC_KIND> help\n");
 	exit(-1);
 }