useing mangle to mark packets

[Sven Neukirchner <s.neukirchner@konabi.de>]

Hello,

I use Linux with  iptables as Router.

I want to mark several Packets which are coming from my Clients in my 
Network and where the destination
ist the internet.

so I set following rule as example:

iptables -t mangle -o $DEV -A POSTROUTING -p ICMP -j MARK --set-mark 1

Is there a way to check if the packets get marks?

I tryed following:

iptables  -A FORWARD   -p ICMP -m mark --mark 1 -j LOG --log-prefix 
"mark " --log-level 6

But it doesnt work.

I want to set up traffice shaping using tc.
So I need to mark packets so I can put them in order.


Thanks Sven