Why the named output warning that stated the b.root-servers.net/A is missing from hints?

Solution Verified - Updated -

Issue

  • Why the named output warning that stated the b.root-servers.net/A is missing from hints?
  • named output logs like below. Is there any impact?

    checkhints: b.root-servers.net/A (170.247.170.2) missing from hints
    checkhints: b.root-servers.net/A (199.9.14.201) extra record in hints
    checkhints: b.root-servers.net/AAAA (2001:500:200::b) extra record in hints
    checkhints: b.root-servers.net/AAAA (2801:1b8:10::b) missing from hints
    

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • bind

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