named is logging "network unreachable" messages

Solution Verified - Updated -

Issue

In /var/log/messages or a named specific log file like /var/named/data/named.run there are a lot of error messages similar to:

error (network unreachable) resolving 'XX.113.112.192.in-addr.arpa/PTR/IN': 2001:418:3ff:4::21#53
error (network unreachable) resolving 'XY.113.112.192.in-addr.arpa/PTR/IN': 2001:218:2000:3005::202#53
error (network unreachable) resolving 'ns.example.com/A/IN': 2001:XXX:231d::2:30#53
error (network unreachable) resolving 'www.example.jp/A/IN': 2001:XXX:c000::35#53
error (network unreachable) resolving 'www.example.jp/A/IN': 2001:XXX:ad09::5#53
error (network unreachable) resolving 'www.example.jp/A/IN': 2001:YYY:0:100::153#53
error (network unreachable) resolving 'www.example.com/A/IN': 2001:XXX:a83e::2:30#53

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • bind

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