#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
/* Make the return type effectively 'void' to match Linux 2.6.30+. */
#define rtnl_notify(skb, net, pid, group, nlh, flags) \
((void) rtnl_notify(skb, net, pid, group, nlh, flags))
#endif
#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
/* Make the return type effectively 'void' to match Linux 2.6.30+. */
#define rtnl_notify(skb, net, pid, group, nlh, flags) \
((void) rtnl_notify(skb, net, pid, group, nlh, flags))
#endif