How does Windows implement the Address Resolution Protocol (ARP)?

[ProfRon]

I remember when I first tinkered with this. Windows grabs ARP to match up those IP spots with hardware tags on your local net. You send a packet out. It broadcasts a yell for the right MAC. Nobody answers? It times out quick. I like how it stashes recent finds in a cache. That speeds things up next time you ping a buddy machine. You can peek at that cache yourself with a simple command. Windows refreshes it now and then to keep junk out. If something's stale, it blasts another query. I once chased a glitch like that on my setup. Turned out a switch was messing with replies. Windows handles duplicates by picking the freshest one. You won't notice unless traffic jams up. It even poisons the cache if attacks sneak in, but that's rare in clean runs. I always clear it after big changes. Keeps your connections snappy.

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