DNS 8 NXRRSET vs 20 BADNAME
Both DNS 8 (NXRRSET) and 20 (BADNAME) 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, 20 means that duplicate key name. The key name in a TKEY negotiation is already in use or conflicts with an existing key.
विवरण
RR Set that should exist does not. A required resource record set is missing from the zone.
जब आप इसे देखें
A DNS UPDATE prerequisite expected a certain RRset to exist (e.g., an MX record), but the zone does not contain it.
कैसे ठीक करें
Create the missing RRset in the zone before retrying the update, or change the prerequisite to not require its existence.
विवरण
Duplicate key name. The key name in a TKEY negotiation is already in use or conflicts with an existing key.
जब आप इसे देखें
A TKEY key establishment failed because a key with the same name already exists on the server from a previous session that was not properly cleaned up.
कैसे ठीक करें
Use a unique key name for each TKEY session (e.g., append a timestamp or random suffix). Delete stale keys on the server if they are no longer needed.
मुख्य अंतर
DNS 8: RR Set that should exist does not. A required resource record set is missing from the zone.
DNS 20: Duplicate key name. The key name in a TKEY negotiation is already in use or conflicts with an existing key.
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 20 when a TKEY key establishment failed because a key with the same name already exists on the server from a previous session that was not properly cleaned up.
कब किसका उपयोग करें
For 8 (NXRRSET): Create the missing RRset in the zone before retrying the update, or change the prerequisite to not require its existence. For 20 (BADNAME): Use a unique key name for each TKEY session (e.g., append a timestamp or random suffix). Delete stale keys on the server if they are no longer needed.