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RFC 1035, "Domain names - implementation and specification", November 1987

Source of RFC: Legacy
Area Assignment: int
See Also: RFC 1035 w/ inline errata

Errata ID: 2130
Status: Verified
Type: Technical
Publication Format(s) : TEXT

Reported By: Alexei A. Smekalkine
Date Reported: 2010-04-05
Verifier Name: Brian Haberman
Date Verified: 2012-04-26

Section 3.2.1 says:

TTL             a 32 bit signed integer that specifies the time interval
                that the resource record may be cached before the source
                of the information should again be consulted.  Zero
                values are interpreted to mean that the RR can only be
                used for the transaction in progress, and should not be
                cached.  For example, SOA records are always distributed
                with a zero TTL to prohibit caching.  Zero values can
                also be used for extremely volatile data.

It should say:

TTL             a 32 bit unsigned integer that specifies the time interval
                that the resource record may be cached before the source
                of the information should again be consulted.  Zero
                values are interpreted to mean that the RR can only be
                used for the transaction in progress, and should not be
                cached.  For example, SOA records are always distributed
                with a zero TTL to prohibit caching.  Zero values can
                also be used for extremely volatile data.

Notes:

Conflicting descriptions of the type of TTL field.

Section 3.2.1 says "a 32 bit signed integer" while section 4.1.3 says "a 32 bit unsigned integer".

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