# Flush tc qdiscs:
/sbin/tc qdisc del dev eth1 root >/dev/null 2>&1

# Create root qdiscs:
/sbin/tc qdisc add dev eth1 root handle 2: htb default 1000

# Create root class :
/sbin/tc class add dev eth1 parent 2: classid 2:1 htb rate 3584kbit ceil 3584kbit burst 0 prio 1

# Create default class :
/sbin/tc class add dev eth1 parent 2: classid 2:1000 htb rate 3500kbit ceil 3350kbit burst 0 prio 5

# Create class:
/sbin/tc class add dev eth1 parent 2:1 classid 2:44 htb rate 64kbit  ceil 72kbit burst 8kbit prio 1 quantum 1536

# Create filter:
/sbin/tc filter add dev eth1 protocol ip parent 2:0 prio 1 handle 244 fw flowid 2:44

# Iptables rules:
/sbin/iptables -F -t mangle
/sbin/iptables -A PREROUTING -t mangle -p udp -s 172.16.0.185/32 --sport  10000:10100 -d 172.16.1.0/24  -j MARK --set-mark 244

Now the statistics:

server:~# iptables -vnx -L -t mangle
Chain PREROUTING (policy ACCEPT 47149617 packets, 16079655958 bytes)
     pkts      bytes target     prot opt in     out     source               destination
     10732  643632 MARK       udp  --  *      *       172.16.0.185         172.16.1.0/24       udp spts:10000:10100 MARK set 0xf4


The are iptables marked packages. Now the classes statistics:

baco:~# tc -s -d cl sh dev eth1
class htb 2:44 parent 2:1 prio 1 quantum 1536 rate 64000bit ceil 72000bit burst 1023b/8 mpu 0b overh ead 0b cburst 1608b/8 mpu 0b overhead 0b level 0
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
 lended: 0 borrowed: 0 giants: 0
 tokens: 131070 ctokens: 183067

class htb 2:1 root rate 3584Kbit ceil 3584Kbit burst 2Kb/8 mpu 0b overhead 0b cburst 2Kb/8 mpu 0b ov erhead 0b level 7
 Sent 0 bytes 0 pkts (dropped 0, overlimits 0)
 lended: 0 borrowed: 0 giants: 0
 tokens: 4680 ctokens: 4680

class htb 2:1000 root prio 5 quantum 43750 rate 3500Kbit ceil 3350Kbit burst 2Kb/8 mpu 0b overhead 0 b cburst 2017b/8 mpu 0b overhead 0b level 0
 Sent 54534126 bytes 270559 pkts (dropped 0, overlimits 0)
 rate 274344bit 123pps
 lended: 270559 borrowed: 0 giants: 0
 tokens: 4505 ctokens: 4661


All the trafic going trhough the default class :(