#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)
/* there is no dev_net() on 2.6.25 */
#define _OPT_NET_ARG (skb->dev->nd_net),
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)
/* there is no dev_net() on 2.6.25 */
#define _OPT_NET_ARG (skb->dev->nd_net),