rem: *nfcache |= NFC_UNKNOWN;
context: static void init(struct ipt_entry_target *target, unsigned int *nfcache){	struct ipt_set_info_target *info =	    (struct ipt_set_info_target *) target->data;	memset(info, 0, sizeof(struct ipt_set_info_target));	info->add_set.index =	info->del_set.index = IP_SET_INVALID_ID;	/* Can't cache this */	*nfcache |= NFC_UNKNOWN;}