Nickname

Thanks for clearing my doubt.

Yesterday and today I received some warnings about "ARP Cache Poisoning attack detected", in the reports the same source and destination IP address is pointed out, the source being my TV and the destination my cell phone. Is it possible that an IP duplication was taking place on the network and this is causing this type of detection? Is it something I should be concerned about? OBS: my Eset is in Portuguese, but I believe it is possible to identify all the items in the report.