diff -Naur -p linux-2.4.29-original/include/linux/pkt_sched.h linux-2.4.29-overhead/include/linux/pkt_sched.h
--- linux-2.4.29-original/include/linux/pkt_sched.h	Wed Nov 17 12:54:22 2004
+++ linux-2.4.29-overhead/include/linux/pkt_sched.h	Sat Mar 12 16:47:57 2005
@@ -81,7 +81,7 @@ struct tc_ratespec
 	unsigned char	cell_log;
 	unsigned char	__reserved;
 	unsigned short	feature;
-	short		addend;
+	unsigned short	overhead;
 	unsigned short	mpu;
 	__u32		rate;
 };
diff -Naur -p linux-2.4.29-original/net/sched/sch_htb.c linux-2.4.29-overhead/net/sched/sch_htb.c
--- linux-2.4.29-original/net/sched/sch_htb.c	Wed Nov 17 12:54:22 2004
+++ linux-2.4.29-overhead/net/sched/sch_htb.c	Sat Mar 12 16:48:57 2005
@@ -205,7 +205,8 @@ struct htb_class
 static __inline__ long L2T(struct htb_class *cl,struct qdisc_rate_table *rate,
 	int size)
 { 
-    int slot = size >> rate->rate.cell_log;
+    int overhead = rate->rate.overhead;
+    int slot = (size-1+overhead) >> rate->rate.cell_log;
     if (slot > 255) {
 	cl->xstats.giants++;
 	slot = 255;