DNS 0 NOERROR vs 9 NOTAUTH
Both DNS 0 (NOERROR) and 9 (NOTAUTH) belong to the DNS Response Codes (RCODEs) category. 0 indicates that no error condition. The query completed successfully and the response contains the requested data. Meanwhile, 9 means that server Not Authoritative for zone, or Not Authorized. The server is not authoritative for the zone named in the Zone section.
Descripción
No error condition. The query completed successfully and the response contains the requested data.
Cuándo lo verás
This is the normal, successful response to any DNS query — the name was resolved and the answer section contains the requested records.
Cómo solucionarlo
No fix needed. RCODE 0 means the DNS lookup succeeded as expected.
Descripción
Server Not Authoritative for zone, or Not Authorized. The server is not authoritative for the zone named in the Zone section.
Cuándo lo verás
You sent a dynamic update or zone operation to a server that is not the authoritative master for that zone, or the server rejected it due to TSIG authentication failure.
Cómo solucionarlo
Send the update to the correct primary authoritative server for the zone. If using TSIG, verify the key name and secret match on both client and server.
Diferencias clave
DNS 0: No error condition. The query completed successfully and the response contains the requested data.
DNS 9: Server Not Authoritative for zone, or Not Authorized. The server is not authoritative for the zone named in the Zone section.
You encounter 0 when this is the normal, successful response to any DNS query — the name was resolved and the answer section contains the requested records.
You encounter 9 when you sent a dynamic update or zone operation to a server that is not the authoritative master for that zone, or the server rejected it due to TSIG authentication failure.
Cuándo usar cada uno
For 0 (NOERROR): No fix needed. RCODE 0 means the DNS lookup succeeded as expected. For 9 (NOTAUTH): Send the update to the correct primary authoritative server for the zone. If using TSIG, verify the key name and secret match on both client and server.