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.
설명
No error condition. The query completed successfully and the response contains the requested data.
이 코드를 보게 되는 경우
This is the normal, successful response to any DNS query — the name was resolved and the answer section contains the requested records.
해결 방법
No fix needed. RCODE 0 means the DNS lookup succeeded as expected.
설명
Server Not Authoritative for zone, or Not Authorized. The server is not authoritative for the zone named in the Zone section.
이 코드를 보게 되는 경우
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.
해결 방법
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.
주요 차이점
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.
언제 어떤 것을 사용할지
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.