Host on network shows an error about duplication of its IP address when ClusterXL with VMAC is used

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Technical Level

Solution ID	sk92364
Technical Level
Product	ClusterXL
Version	R75 (EOL), R76 (EOL), R77 (EOL), R77.10 (EOL), R77.20, R77.30 (EOL), R80.10 (EOL)
OS	Gaia, SecurePlatform 2.6
Platform / Model	All
Date Created	18-Feb-2013
Last Modified	14-Mar-2019

Symptoms

"Error, some other host already uses address IP_ADDRESS" error on command line on Linux-based host when restarting the "network" service (with "service network restart" command) on a host, or when rebooting a host.
"Found duplicate IP address IP_ADDRESS" error on Windows-based host when restarting the "Network Connections" or "Server" service on a host, or when rebooting a host.

Cause

There are two causes:

ClusterXL answers the Gratuitous ARP Requests (sent by hosts on the network) for IP addresses configured in the $FWDIR/conf/local.arp file (per sk30197).
ClusterXL with VMAC (per sk50840) sends Gratuitous ARP Requests for IP addresses configured in the $FWDIR/conf/local.arp file (per sk30197).

Solution

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