DNS 0 NOERROR vs 11 DSOTYPENI
Both DNS 0 (NOERROR) and 11 (DSOTYPENI) 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, 11 means that dSO-TYPE Not Implemented. The DNS Stateful Operations (DSO) type in the request is not supported by the server.
Описание
No error condition. The query completed successfully and the response contains the requested data.
Когда вы это видите
This is the normal, successful response to any DNS query — the name was resolved and the answer section contains the requested records.
Как исправить
No fix needed. RCODE 0 means the DNS lookup succeeded as expected.
Описание
DSO-TYPE Not Implemented. The DNS Stateful Operations (DSO) type in the request is not supported by the server.
Когда вы это видите
Your client attempted a DSO operation (like a keepalive or push subscription) that the server does not recognize or has not implemented.
Как исправить
Verify that both client and server support the same DSO-TYPE. Upgrade the server software or fall back to traditional DNS queries.
Ключевые различия
DNS 0: No error condition. The query completed successfully and the response contains the requested data.
DNS 11: DSO-TYPE Not Implemented. The DNS Stateful Operations (DSO) type in the request is not supported by the server.
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 11 when your client attempted a DSO operation (like a keepalive or push subscription) that the server does not recognize or has not implemented.
Когда что использовать
For 0 (NOERROR): No fix needed. RCODE 0 means the DNS lookup succeeded as expected. For 11 (DSOTYPENI): Verify that both client and server support the same DSO-TYPE. Upgrade the server software or fall back to traditional DNS queries.