Hi, I am trying to set the source ip of an RX packet to a local IP in a pre_route filter (from within a kernel module) but the kernel drops such a packet during routing phase. By local IP I mean one of the IP addresses defined on the system running my kernel module. At what point is the kernel dropping the packet? Is it that the kernel doesn't like a packet received from the network with a local source IP? Can this behavior be overridden? The bigger picture is the following. I have a linux box with 4 interfaces each having multiple local IPs. This box needs to route packets to multiple remote subnets. In order to successfully route packets i had to create multiple routing table entries towards every new remote subnet encountered. However the remote subnets far exceed the local IPs and hence I was exploring the usage of policy based source routing so as to minimize the creation of routing entries. With a destination based routing system i used to modify destination IP in pre_route hook and source IP in forward_hook. I was wondering how to mangle the packet in a source based routing scheme Thanks, Vivek -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
