iptables + ROUTE

Mato Vidovic mvidovic at gmx.at
Thu Nov 9 06:40:42 CET 2006


I am new in iptables world - and after reading many discussions and studying iptables manpages etc. I am 
still missing a piece of puzzle to solve the following problem. 
I have a need to perform TOS based traffic routing. 
That means I have two interfaces (say eth0 and eth1) to backbone and I need to route the real-time critical 
IP traffic over eth1 and the remaining IP traffic over eth0. 
After a lot of experimenting I came to the conclusion that something like the following would do: 

# iptables -t mangle -A POSTROUTING -m tos --tos  16 -j ROUTE --oif eth1 
# iptables -t mangle -A POSTROUTING -m tos --tos !16 -j ROUTE --oif eth0 

Unfortunately the Linux box says: 
"No chain/target/match by that name" 

The kernel I use is 2.6.18, iptables version is the last debian stable version 1.2.11. 

Any idea what is wrong here (am I missing something in the configuration, or a library, or am I completely wrong maybe…)?

Thanks for any help. 


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