dns_message_renderrelease
dns_message_renderrelease(dns_message_t *msg, unsigned int space);
dns_message_renderrelease(msg, msg->opt_reserved);
dns_message_renderrelease(msg, msg->sig_reserved);
dns_message_renderrelease(msg, msg->sig_reserved);
dns_message_renderrelease(msg, msg->opt_reserved);
dns_message_renderrelease(msg, msg->sig_reserved);