diff -upr 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 @@ endif
 #TCMODULES += q_csz.o
 #TCMODULES += q_hpfq.o
 #TCMODULES += q_hfsc.o
+TCMODULES += q_dup.o
 
 TCOBJ += $(TCMODULES)
 
Only in iproute2-2.4.7-now-ss020116-try-dup/tc: q_dup.c
diff -upr 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 @@ static void usage(void)
 	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);
 }