Module domain::iana::rcode

DNS response codes and extended response codes.

The original DNS specification in [RFC 1035] specified four bits of the message header as response code. The type [Rcode] defined herein represents these codes. Later, RFC 2671 added eight bits to the response code to be transmitted as part of the OPT pseudo-resource record. To make matters even worse, the TSIG and TKEY records defined by RFC 2845 and RFC 2930 use a 16 bit error code. All of these codes share the same defition space. Even so, we have separate types for each of these.

[Rcode]:

Enums

OptRcode	Extended DNS Response Codes for OPT records.
Rcode	DNS Response Codes.
TsigRcode	Response codes for transaction authentication (TSIG).