DNS 6 YXDOMAIN vs 19 BADMODE
Both DNS 6 (YXDOMAIN) and 19 (BADMODE) belong to the DNS Response Codes (RCODEs) category. 6 indicates that name Exists when it should not. Used in dynamic updates to indicate a name that should not exist already has records. Meanwhile, 19 means that bad TKEY Mode. The TKEY mode field contains a value not supported by the server.
Mô tả
Name Exists when it should not. Used in dynamic updates to indicate a name that should not exist already has records.
Khi bạn thấy mã này
A DNS UPDATE prerequisite check failed because the domain name already exists when the update expected it to be absent.
Cách khắc phục
Review your dynamic update prerequisites. If you expect to create a new name, remove the existing records first or change the prerequisite to allow existing names.
Mô tả
Bad TKEY Mode. The TKEY mode field contains a value not supported by the server.
Khi bạn thấy mã này
Your client attempted a TKEY key exchange using a mode (e.g., Diffie-Hellman, GSS-API) that the server does not support or has not been configured for.
Cách khắc phục
Check which TKEY modes the server supports and configure your client to use a compatible mode. GSS-TSIG (mode 3) is the most widely deployed.
Sự khác biệt chính
DNS 6: Name Exists when it should not. Used in dynamic updates to indicate a name that should not exist already has records.
DNS 19: Bad TKEY Mode. The TKEY mode field contains a value not supported by the server.
You encounter 6 when a DNS UPDATE prerequisite check failed because the domain name already exists when the update expected it to be absent.
You encounter 19 when your client attempted a TKEY key exchange using a mode (e.g., Diffie-Hellman, GSS-API) that the server does not support or has not been configured for.
Khi nào dùng cái nào
For 6 (YXDOMAIN): Review your dynamic update prerequisites. If you expect to create a new name, remove the existing records first or change the prerequisite to allow existing names. For 19 (BADMODE): Check which TKEY modes the server supports and configure your client to use a compatible mode. GSS-TSIG (mode 3) is the most widely deployed.