DNS 8 NXRRSET vs 17 BADKEY
Both DNS 8 (NXRRSET) and 17 (BADKEY) belong to the DNS Response Codes (RCODEs) category. 8 indicates that rR Set that should exist does not. A required resource record set is missing from the zone. Meanwhile, 17 means that key not recognized. The TSIG key name in the message is not configured on the server.
Descrição
RR Set that should exist does not. A required resource record set is missing from the zone.
Quando você o vê
A DNS UPDATE prerequisite expected a certain RRset to exist (e.g., an MX record), but the zone does not contain it.
Como corrigir
Create the missing RRset in the zone before retrying the update, or change the prerequisite to not require its existence.
Descrição
Key not recognized. The TSIG key name in the message is not configured on the server.
Quando você o vê
Your TSIG-signed query or update references a key name that the server does not have in its keyring, so it cannot verify the signature.
Como corrigir
Ensure the TSIG key name matches exactly (case-sensitive) on both client and server. Add the missing key to the server's configuration if it is a new key.
Diferenças principais
DNS 8: RR Set that should exist does not. A required resource record set is missing from the zone.
DNS 17: Key not recognized. The TSIG key name in the message is not configured on the server.
You encounter 8 when a DNS UPDATE prerequisite expected a certain RRset to exist (e.g., an MX record), but the zone does not contain it.
You encounter 17 when your TSIG-signed query or update references a key name that the server does not have in its keyring, so it cannot verify the signature.
Quando usar qual
For 8 (NXRRSET): Create the missing RRset in the zone before retrying the update, or change the prerequisite to not require its existence. For 17 (BADKEY): Ensure the TSIG key name matches exactly (case-sensitive) on both client and server. Add the missing key to the server's configuration if it is a new key.