NSX: Informational message "Conflict record found: ArpRecord"

Products

• VMware NSX

Issue/Introduction

"Conflict record found: ArpRecord" is an informational message in NSX that results when the owner of an IP address changes. It may be followed by "Merged duplicated Fib". This reflects a normal process within NSX.

Resolution

The "Conflict record found: ArpRecord" information message indicates that the NSX control plane has been informed of an ARP (IP address and MAC address) record that is different than the one currently stored for that IP address. This message can result from normal network operation or network client misconfiguration and does not indicate an error within the NSX software.

Here are some possible reasons why this message might be seen:

• A duplicate IP address exists on the network
• An IP address was removed from one network client and reassigned to another
• A virtual machine image with a fixed IP address is repeatedly instantiated as a new VM with a different MAC address
• A shared IP address (also called virtual IP or VIP) has transferred to a new active host, such as during a failover process
• A device with redundant network interfaces has changed its active interface due to disconnection or failure
• The MAC address of a network interface was changed

 NSX will use the most recently learned record.