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RFC 2136, "Dynamic Updates in the Domain Name System (DNS UPDATE)", April 1997

Source of RFC: dnsind (int)

Errata ID: 2805
Status: Held for Document Update
Type: Technical
Publication Format(s) : TEXT

Reported By: Tony Finch
Date Reported: 2011-05-09
Held for Document Update by: Brian Haberman

Section 1.1.1 says:

   1.1.1. Two RRs are considered equal if their NAME, CLASS, TYPE,
   RDLENGTH and RDATA fields are equal.  Note that the time-to-live
   (TTL) field is explicitly excluded from the comparison.

It should say:

   1.1.1. Two RRs are considered equal if their NAME, CLASS, TYPE,
   RDLENGTH and RDATA fields are equal.  Compressed names in the RDATA
   must be decompressed before comparison. Note that the time-to-live
   (TTL) field is explicitly excluded from the comparison.

Notes:

Name compression depends on the context of the RR so RDATA cannot correctly be compared bytewise without taking this into account.

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