@netlab.academy: My PC pinged a server it has never actually met. Here's the proof 🤯 A PC can only talk directly to devices on its own network. For anything on a different network, it hands the packet to the default gateway and lets the router do the rest. So the PC only ever needs the MAC address of the gateway. At each new network, the router does its own ARP to find the next device. This explains why a wrong gateway breaks everything outside your subnet. Follow for more… ⚡️ #networking #ciscopackettracer #arp #router #mac

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Friday 16 October 2026 13:49:19 GMT