I would like to be able to construct a box that can promiscuosly sense traffic on a number of standard 100Mbps NICs and concentrate this traffic on an outgoing 1Gbps interface. Essentially any packets seen on the input nics would be copied and sent out unaltered on the output interface. Does anyone know how I can achieve this ? At the kernel level I have looked for inspiration in the bonding driver, bridging and netfilter but so far I've drawn a blank. Would it be practical to do this in user space with three our four input NICS and heavy traffic ? Thanks, Mike - : 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