RARP (Reverse Address Resolution Protocol)

* RARP is a link layer networking protocol, used to resolve an IP address from a given hardware address (such as an Ethernet address).
* RARP requires one or more server hosts to maintain a database of mappings from Link Layer address to protocol address.
* To obtain its IP address, the host broadcasts an RARP request packet containing its MAC address on the network.

* All hosts in the network receive the packet, but only the server replies to the host by sending an RARP response containing the host’s MAC and IP address.

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