dnslook
if(!dnslook(ctx, realq, LDNS_RR_TYPE_A, c, 1)) {
(void)dnslook(ctx, realq, LDNS_RR_TYPE_AAAA, c, 0);
(void)dnslook(ctx, realq, LDNS_RR_TYPE_MX, c, 0);
(void)dnslook(ctx, realq, t, c, 1);