+ ret = nf_register_hook(&ip6t_ops[1]);
+ if (ret < 0)
+ goto cleanup_hook0;
+
+ ret = nf_register_hook(&ip6t_ops[2]);
+ if (ret < 0)
+ goto cleanup_hook1;
+
+ ret = nf_register_hook(&ip6t_ops[3]);
+ if (ret < 0)
+ goto cleanup_hook2;
+
+ ret = nf_register_hook(&ip6t_ops[4]);
+ if (ret < 0)
+ goto cleanup_hook3;
+