DNS 1 FORMERR vs 8 NXRRSET
Both DNS 1 (FORMERR) and 8 (NXRRSET) belong to the DNS Response Codes (RCODEs) category. 1 indicates that format error. The name server was unable to interpret the query due to a malformed DNS message. Meanwhile, 8 means that rR Set that should exist does not. A required resource record set is missing from the zone.
Deskripsi
Format error. The name server was unable to interpret the query due to a malformed DNS message.
Ketika Anda Melihatnya
Your DNS client or library sent a query the server could not parse, often caused by a buggy resolver, corrupted packet, or unsupported EDNS options.
Cara Memperbaiki
Check your DNS client or library version for known bugs. Capture the raw query with dig or Wireshark and verify it conforms to the DNS wire format.
Deskripsi
RR Set that should exist does not. A required resource record set is missing from the zone.
Ketika Anda Melihatnya
A DNS UPDATE prerequisite expected a certain RRset to exist (e.g., an MX record), but the zone does not contain it.
Cara Memperbaiki
Create the missing RRset in the zone before retrying the update, or change the prerequisite to not require its existence.
Perbedaan Utama
DNS 1: Format error. The name server was unable to interpret the query due to a malformed DNS message.
DNS 8: RR Set that should exist does not. A required resource record set is missing from the zone.
You encounter 1 when your DNS client or library sent a query the server could not parse, often caused by a buggy resolver, corrupted packet, or unsupported EDNS options.
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.
Kapan Menggunakan Yang Mana
For 1 (FORMERR): Check your DNS client or library version for known bugs. Capture the raw query with dig or Wireshark and verify it conforms to the DNS wire format. For 8 (NXRRSET): Create the missing RRset in the zone before retrying the update, or change the prerequisite to not require its existence.