On 7/31/06, Ming Chen <tomingchen@xxxxxxxxx> wrote:
Hi, My linux box connects to router directly through a direct connected FE interface. The Linux default gateway points to the ip address on the router. My application needs to return all ip traffic that not destined to my linux box back to router. For example: Linux Box <---------> Router 10.1.1.10 10.1.1.1 default gw: 10.1.1.1 When 77.1.1.1 packet arrives to Linux box, the linux need to return the packet back to router.
Hi, Somebody please correct me if I am wrong but, AFAIK: 1) Your box should not see any packet that is not destined for its network (10.1.1.x?). Even if a packet is destined for your network, the box should not see it untill & unless your NIC is configured to be in the promiscous mode. If the above does not hold true, I think there is a problem. 2) Your Linux Box is not functioning as a router, so it won't forward any packet NOT sourced from itself to the gateway. Any packet if not addressed to it shall be discarded. 3) As your box & the router are on the same network; if your box is seeing a packet, then your router is surely seeing it (since packets are broadcasted on a LAN). Regards, Rajat -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
