dns_server: fix only cache on ip address result issue

src/dns_conf.c

@@ -2093,6 +2093,15 @@ static int _dns_conf_load_post(void)
 			 dns_conf_response_mode_enum[dns_conf_response_mode].name);
 	}
 
+
+	if ((dns_conf_rr_ttl_min > dns_conf_rr_ttl_max) && dns_conf_rr_ttl_max > 0) {
+		dns_conf_rr_ttl_min = dns_conf_rr_ttl_max;
+	}
+
+	if ((dns_conf_rr_ttl_max < dns_conf_rr_ttl_min) && dns_conf_rr_ttl_max > 0) {
+		dns_conf_rr_ttl_max = dns_conf_rr_ttl_min;
+	}
+
 	if (dns_conf_local_ttl == 0) {
 		dns_conf_local_ttl = dns_conf_rr_ttl_min;
 	}

src/dns_server.c

@@ -1824,6 +1824,10 @@ static void _dns_server_complete_with_multi_ipaddress(struct dns_request *reques
 		_dns_server_force_dualstack(request);
 	}
 
+	if (request->passthrough && do_reply == 0) {
+		return;
+	}
+
 	_dns_server_post_context_init(&context, request);
 	context.do_cache = 1;
 	context.do_ipset = 1;