DNS 10 NOTZONE vs 21 BADALG
Both DNS 10 (NOTZONE) and 21 (BADALG) belong to the DNS Response Codes (RCODEs) category. 10 indicates that name not contained in zone. A name used in the Prerequisite or Update section is not within the zone denoted by the Zone section. Meanwhile, 21 means that algorithm not supported. The cryptographic algorithm specified in the TKEY or SIG record is not supported by the server.
الوصف
Name not contained in zone. A name used in the Prerequisite or Update section is not within the zone denoted by the Zone section.
متى تراه
Your dynamic update tried to modify a record that falls outside the zone specified in the update message (e.g., updating foo.example.org in the example.com zone).
كيفية الإصلاح
Ensure all names in the update are within the target zone. Check for typos in the zone name or the records being updated.
الوصف
Algorithm not supported. The cryptographic algorithm specified in the TKEY or SIG record is not supported by the server.
متى تراه
Your TKEY negotiation or DNSSEC operation requested an algorithm (e.g., HMAC-SHA512) that the server has not been compiled with or configured to accept.
كيفية الإصلاح
Use a mutually supported algorithm. HMAC-SHA256 is widely supported for TSIG; for DNSSEC, check the server's supported algorithm list with its documentation.
الفروق الرئيسية
DNS 10: Name not contained in zone. A name used in the Prerequisite or Update section is not within the zone denoted by the Zone section.
DNS 21: Algorithm not supported. The cryptographic algorithm specified in the TKEY or SIG record is not supported by the server.
You encounter 10 when your dynamic update tried to modify a record that falls outside the zone specified in the update message (e.g., updating foo.example.org in the example.com zone).
You encounter 21 when your TKEY negotiation or DNSSEC operation requested an algorithm (e.g., HMAC-SHA512) that the server has not been compiled with or configured to accept.
متى تستخدم أيًا منهما
For 10 (NOTZONE): Ensure all names in the update are within the target zone. Check for typos in the zone name or the records being updated. For 21 (BADALG): Use a mutually supported algorithm. HMAC-SHA256 is widely supported for TSIG; for DNSSEC, check the server's supported algorithm list with its documentation.