#include "vlan.h"
#include "vport-internal_dev.h"
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18) || \
+ LINUX_VERSION_CODE > KERNEL_VERSION(2,6,39)
+#error Kernels before 2.6.18 or after 2.6.39 are not supported by this version of Open vSwitch.
+#endif
+
int (*dp_ioctl_hook)(struct net_device *dev, struct ifreq *rq, int cmd);
EXPORT_SYMBOL(dp_ioctl_hook);