Hi, could anyone provides any example about the use of ip route command to force the use of one route using masks in the mark? The configuration is: 1 LAN (zlan0) iface N WAN (wan0 ... wanN) ifaces with static IPs and load balanced. iptables 1.3.7 kernel 2.6.19.2 iproute 2.6.19 I'm yet setting marks into packets for QoS and its working, I now want to set some bits (OR) at the end of the mark. For example, I want to use 0x8000 to add another mark to the packet for routing. The packet is market yet with a QoS mark (--set-mark), 0x5 (for example). I need: 1) The packet been marked with 0x8000 OR 0x0005 = 0x8005 2) Route the packet with 0x8005 AND 0x8000 = 0x8000 over wan0 (for example) 3) Classify the packet with 0x8005 AND 0x0005 into wan0 1:4 class (for example) I know how to do this not having sense about MASKs, but ... Could anybody put here how to do it with them? Another question: What is the length of the mask? 16bit? 32bit? Thanks!!