http://developer.osdl.org/shemminger/patches/2.6.12-rc4-bridge/ Here are some patches for requested features, given basic testing but need more testing before they are publicly ready: bridge-csum - turn on bridge pseudo-device flags so that smart hardware does less work. Helps Xen bridge-flush - add /sys/class/net/brX/bridge/flush write only hook to flush forwarding database entries bridge-setmac - allow setting device address to force bridge_id. setting to zero forces recalculation