#if LINUX_VERSION_CODE == KERNEL_VERSION(2,6,36)
#define IFF_OVS_DATAPATH IFF_BRIDGE_PORT
#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36)
#if LINUX_VERSION_CODE == KERNEL_VERSION(2,6,36)
#define IFF_OVS_DATAPATH IFF_BRIDGE_PORT
#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36)