got insecure response; parent indicates it should be secure メッセージがログに出力されるのはなぜですか?

Solution Unverified - Updated -

Issue

以下のメッセージが /var/log/messages に出力されます。

<daemon.info> name01 named[1647]: validating @0x7f725c6373d0: arpa DNSKEY: got insecure response; parent indicates it should be secure
<daemon.info> name01 named[1647]: error (insecurity proof failed) resolving 'arpa/DNSKEY/IN':X.X.X.X#53
 <daemon.info> name01 named[1647]:error (broken trust chain) resolving 'cn/DS/IN':X.X.X.X#53
 <daemon.info> name01 named[1647]]: error (no valid DS) resolving 'cn/A/IN';:X.X.X.X#53

Environment

  • Red Hat Enterprise Linux 6
  • bind

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