extern void ip6_route_init(void);
extern void ip6_route_cleanup(void);
-extern int ipv6_route_ioctl(unsigned int cmd, void *arg);
+extern int ipv6_route_ioctl(unsigned int cmd, void __user *arg);
extern int ip6_route_add(struct in6_rtmsg *rtmsg,
struct nlmsghdr *,