Cannot add Host with error "The Host name is already in use" or "Host with the same address already exists"

Solution Verified - Updated -

Issue

  • Add Host failed with the following error message:
Error while executing action: Cannot add Host. Host with the same address already exists.

001.jpg

  • And
Error while executing action: Cannot add Host. The Host name is already in use, please choose a unique name and try again

002.jpg

Environment

  • Red Hat Enterprise Virtualization 3.4 and older versions.
  • Red Hat Enterprise Virtualization Hypervisor release 6.5 (20140725.0.el6ev)
  • Red Hat Enterprise Linux hosts.

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