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If a RTR controller has multiple Ethernet IP addresses that are connected to the same subnet, and Profinet interface is enabled among them, for example:
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In in order to prioritize Profinet communication, a user needs to open and edit the /etc/sysctl.conf file, to add net.ipv4.conf.all.arp_ignore = 1 at the end of the file. Then save and reboot the RTR controller.
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