What, if any, user space command is available/recommended for adding/deleting MAC addresses and masks to hardware based ARC/CAM/MAC address filter memory on chip. I've done a driver for a new 10/100 MAC/PHY combo (currently running on ARM) that has on chip memory and logic for this kind of filtration. I'm aware of the kernel multicast support and I've tied my set_multicast_list() function to needed chip interface but can't find a standard user space command to instantiate the list with MAC addresses/masks. Thnx v much, johnh . =========================================================== John Heil South Coast Software Custom firmware, device drivers and board bring up services Ph: 1-714-774-6952 Fx: 1-714-774-7053 www.sc-software.com email: johnhscs@xxxxxxxxxxxxxxx ===========================================================