hi I had doubt using this "NF_IP_LOCAL_OUT" netfilter hook, do all locally generated packets hit this hook first ? .. i.e a packet comes from application running on this machine, goes to TCP , then comes to ip... or say a normal TCP ack going out from this machine ... so would all such "locally generated" packets hit this hook first ? and is the routing decision for such packets taken after they traverse this hook ? thanks Amit "DISCLAIMER: This message is proprietary to Hughes Software Systems Limited (HSS) and is intended solely for the use of the individual to whom it is addressed. It may contain privileged or confidential information and should not be circulated or used for any purpose other than for what it is intended. If you have received this message in error, please notify the originator immediately. If you are not the intended recipient, you are notified that you are strictly prohibited from using, copying, altering, or disclosing the contents of this message. HSS accepts no responsibility for loss or damage arising from the use of the information transmitted by this email including damage from virus."