pub enum AuthUsage {
    Local,
    NxDomain,
    Loopback,
    Normal,
}
Expand description

Authoritative DNS Servers:

Are developers of authoritative domain name servers expected to make their implementations recognize these names as special and treat them differently? If so, how?

Variants

Local

Authoritative DNS servers SHOULD recognize these names as special and SHOULD, by default, generate immediate negative responses for all such queries, unless explicitly configured by the administrator to give positive answers for private-address reverse-mapping names.

NxDomain

Authoritative DNS servers SHOULD recognize these names as special and SHOULD, by default, generate immediate negative responses for all such queries, unless explicitly configured by the administrator to give positive answers for private-address reverse-mapping names.

Loopback

Authoritative DNS servers SHOULD recognize localhost names as special and handle them as described above for caching DNS servers.

Normal

Authoritative DNS servers SHOULD NOT recognize example names as special.

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