DNS 7 YXRRSET vs 11 DSOTYPENI
Both DNS 7 (YXRRSET) and 11 (DSOTYPENI) belong to the DNS Response Codes (RCODEs) category. 7 indicates that rR Set Exists when it should not. A resource record set exists that the update prerequisite says should not. Meanwhile, 11 means that dSO-TYPE Not Implemented. The DNS Stateful Operations (DSO) type in the request is not supported by the server.
描述
RR Set Exists when it should not. A resource record set exists that the update prerequisite says should not.
何时出现
A DNS UPDATE failed because a specific RRset (e.g., an A record) already exists when the prerequisite required it to be absent.
如何修复
Delete the conflicting RRset before retrying the update, or adjust your prerequisite conditions to match the actual zone state.
描述
DSO-TYPE Not Implemented. The DNS Stateful Operations (DSO) type in the request is not supported by the server.
何时出现
Your client attempted a DSO operation (like a keepalive or push subscription) that the server does not recognize or has not implemented.
如何修复
Verify that both client and server support the same DSO-TYPE. Upgrade the server software or fall back to traditional DNS queries.
主要区别
DNS 7: RR Set Exists when it should not. A resource record set exists that the update prerequisite says should not.
DNS 11: DSO-TYPE Not Implemented. The DNS Stateful Operations (DSO) type in the request is not supported by the server.
You encounter 7 when a DNS UPDATE failed because a specific RRset (e.g., an A record) already exists when the prerequisite required it to be absent.
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.
何时使用哪个
For 7 (YXRRSET): Delete the conflicting RRset before retrying the update, or adjust your prerequisite conditions to match the actual zone state. 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.