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Gateway keeps flooding the network with arp requests

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#1 rgb89


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Posted 12 January 2018 - 02:32 PM

I have a small home network consisting of the gateway from the ISP, and less than 15 wireless clients. I noticed the network slowed down alot, even when there was only 1 client connected. I downloaded wireshark and captured with only 1 pc connected via ethernet, disabled the wifi and disconnected the telephone line that feeds the gate way. Every few seconds, i see the gateway sending out arp requests to sequential ip addresses that dont even exist on the network. See the image and file below. Capture: https://drive.google.com/file/d/1hBoD... Capture file: https://drive.google.com/file/d/1hf4I...

Im sure this is not normal behavior. There is alot of lag on the network at the moment its hard to get any work done.What could be causing this? Is it possible for the gate to be poisoned in this way? Any guidance provided would be greatly appreciated. Thank you!

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