Why 'ip link set' command worked differently between RHEL 7.4 and RHEL 7.9?

Solution Verified - Updated -

Issue

  • When using ip link set down on RHEL 7.4, default G/W has removed and it's not added again when ip link set up.
  • When using ip link set down on RHEL 7.9, default G/W has removed and it's added again when ip link set up.

Environment

  • Red Hat Enterprise Linux 7.9
  • Red Hat Enterprise Linux 7.4

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