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this post was submitted on 16 Aug 2023
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I can guess at some things but let me first start with what I think is happening:
You have a gateway set. Your device sends a broadcast arp message asking 'who has ip ' and the device with that ip is supposed to send back 'me with this mac address!'.
That device is either sending it so slowly that your machine says 'I can't go past the gateway, the gateway isn't responding' which in your error message is no route to host.
Assuming that you have no custom manual network route in play.
So things that can cause that are usually link layer and layer two issues and sometimes duplicate IPs. Two devices with the gateway ip.
You should watch your mac address table and arp table (arp a) and watch if the router gateway disappears or changes Mac addresses.