DNS 4 NOTIMP vs 9 NOTAUTH
Both DNS 4 (NOTIMP) and 9 (NOTAUTH) belong to the DNS Response Codes (RCODEs) category. 4 indicates that not Implemented. The name server does not support the requested query type or operation. 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.
Описание
Not Implemented. The name server does not support the requested query type or operation.
Когда вы это видите
You sent a query type (e.g., IXFR, dynamic update) that the server does not support or has disabled.
Как исправить
Verify the server supports the query type you are using. If you need zone transfers or dynamic updates, enable them in the server configuration.
Описание
Server Not Authoritative for zone, or Not Authorized. The server is not authoritative for the zone named in the Zone section.
Когда вы это видите
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.
Как исправить
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.
Ключевые различия
DNS 4: Not Implemented. The name server does not support the requested query type or operation.
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 4 when you sent a query type (e.g., IXFR, dynamic update) that the server does not support or has disabled.
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.
Когда что использовать
For 4 (NOTIMP): Verify the server supports the query type you are using. If you need zone transfers or dynamic updates, enable them in the server configuration. 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.