Why realmd command fails to join system to AD domain with error "{Device Timeout} The specified I/O operation on %hs was not completed before the time-out period expired."?

Solution Verified - Updated -

Issue

  • realmd fails to join RHEL system to Active Directory domain with below error.
Failed to join domain: failed to lookup DC info for domain 'example.com' over rpc: {Device Timeout} The specified I/O operation on %hs was not completed before the time-out period expired.
! Joining the domain example.com failed

Environment

  • Red Hat Enterprise Linux Server 7
  • realmd-0.16.1-9.el7.x86_64

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