Hi all, Sorry for the long post, and bad ascii art... I have been using HTB for about 6 or so months without problems, but I have recently set it up on a separate network and am having a few issues. Network Setup. B / Internet ------ A /--- C \ \ D A is my internet router running kernel 2.4.20 with HTB eth0 = 202.162.100.201/30, eth1 = 192.168.0.1/24 B, eth0 = 192.168.0.2/24 C, eth0 = 192.168.0.32/24 D, eth0 = 192.168.0.33/24 are hosts hanging off my network. in my HTB setup I have the following classes. tc qdisc add dev eth0 root handle 1: htb default 2 tc class add dev eth0 parent 1: classid 1:1 htb rate 10240kbit ceil 10240kbit tc class add dev eth0 parent 1:1 classid 1:2 htb rate 4kbit ceil 4kbit tc class add dev eth0 parent 1:1 classid 1:3 htb rate 4kbit ceil 10240kbit tc class add dev eth0 parent 1:1 classid 1:4 htb rate 4kbit ceil 64kbit tc qdisc add dev eth1 root handle 1: htb default 2 tc class add dev eth1 parent 1: classid 1:1 htb rate 10240kbit ceil 10240kbit tc class add dev eth1 parent 1:1 classid 1:2 htb rate 4kbit ceil 4kbit tc class add dev eth1 parent 1:1 classid 1:3 htb rate 4kbit ceil 10240kbit tc class add dev eth1 parent 1:1 classid 1:4 htb rate 4kbit ceil 64kbit ..and filters. tc filter add dev eth0 protocol ip parent 1: prio 1 handle 3 fw flowid 1:3 tc filter add dev eth0 protocol ip parent 1: prio 1 handle 4 fw flowid 1:4 tc filter add dev eth1 protocol ip parent 1: prio 1 handle 3 fw flowid 1:3 tc filter add dev eth1 protocol ip parent 1: prio 1 handle 4 fw flowid 1:4 ....and netfilter entries. iptables -A PREROUTING -t mangle -s 192.168.0.1 -j MARK --set-mark 3 iptables -A PREROUTING -t mangle -s 192.168.0.2 -j MARK --set-mark 3 iptables -A PREROUTING -t mangle -s 202.162.100.201 -j MARK --set-mark 3 iptables -A PREROUTING -t mangle -s 192.168.0.32/28 -j MARK --set-mark 4