CLASS_ANY
if (query->qclass != CLASS_ANY) {
if (q->qclass != CLASS_ANY && q->zone->ns_rrset && answer_needs_ns(q)
if (q->qclass == CLASS_ANY) {
if (q->qclass == CLASS_ANY) {
if (q->qclass != CLASS_IN && q->qclass != CLASS_ANY) {
if (type != TYPE_TSIG || klass != CLASS_ANY) {
buffer_write_u16(packet, CLASS_ANY);
uint16_t klass = htons(CLASS_ANY);