Hi Yung, You can look in netfilter ip_queue module (iptables QUEUE target) with rules of queueing packets at POSTROUTING/FORWARD hook. Hope this helps -- Sumit ----- Original Message ----- From: "Yung Yi" <yiyung@mail.utexas.edu> Sent: Wednesday, July 30, 2003 2:38 AM > Given this packet (destination ip address of this packet), > is there any use-level system call or method for quering and knowing the > outgoing interface of this packet? > This is related with looking up the routing table at user-level. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html