Why does Wireshark mark an ARP packet with a 'Duplicate IP Address' message?

Solution In Progress - Updated -

Issue

  • When testing cluster failover it was noted that when a Gratuitous ARP was sent, Wireshark showed two of the packets, and at least one was marked as a possible duplicate IP address.

Environment

  • Red Hat Enterprise Linux (RHEL)
  • Wireshark

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