DNS 7 YXRRSET vs 20 BADNAME
Both DNS 7 (YXRRSET) and 20 (BADNAME) 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, 20 means that duplicate key name. The key name in a TKEY negotiation is already in use or conflicts with an existing key.
Deskripsi
RR Set Exists when it should not. A resource record set exists that the update prerequisite says should not.
Ketika Anda Melihatnya
A DNS UPDATE failed because a specific RRset (e.g., an A record) already exists when the prerequisite required it to be absent.
Cara Memperbaiki
Delete the conflicting RRset before retrying the update, or adjust your prerequisite conditions to match the actual zone state.
Deskripsi
Duplicate key name. The key name in a TKEY negotiation is already in use or conflicts with an existing key.
Ketika Anda Melihatnya
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.
Cara Memperbaiki
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.
Perbedaan Utama
DNS 7: RR Set Exists when it should not. A resource record set exists that the update prerequisite says should not.
DNS 20: Duplicate key name. The key name in a TKEY negotiation is already in use or conflicts with an existing key.
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 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.
Kapan Menggunakan Yang Mana
For 7 (YXRRSET): Delete the conflicting RRset before retrying the update, or adjust your prerequisite conditions to match the actual zone state. 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.