iptables-ebtables

Hi 

I like to build a Qos by mixing iptables-ebtables.Here is one of my scripts:

ifconfig eth0 0.0.0.0 up
brctl addbr breth0
brctl addif breth0 eth0
ifconfig breth0 192.168.4.1 up
iptables -t mangle -N new_output
iptables -t mangle -A POSTROUTING -o breth0 -m physdev --physdev-out eth0 -j
new_output
iptables -t mangle -A new_output -d 192.168.4.2 -j MARK --set-mark 19
ebtables -t nat -A POSTROUTING --logical-out breth0 --mark 19 -d
00:01:4A:05:F0:E6 -j mark --set-mark 20


tc qdisc add dev eth0 root handle 1: htb default 26
tc class add dev eth0 parent 1: classid 1:1 htb rate 1000kbit
tc class add dev eth0 parent 1:1 classid 1:20 htb rate 100kbit ceil 200kbit prio 0
tc qdisc add dev eth0 parent 1:20 handle 20: sfq perturb 10
tc filter add dev eth0 parent 1:0 prio 0 protocol ip handle 20 fw flowid 1:20

I could use ebtables also for the destination ip but i need iptables for more
advanced marking (layer7 etc).The problem is that ebtables rule seems not to
match the mark from iptables.It works without the mark match but not with this.I
think that for no bridged packets breth0 POSTROUTING chain comes after iptables
POSTOROUTING chain so i used this order.Is it legal to try to change a mark?

Thanks a lot. 



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