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Note that with some other types of data links, the router has a little more work to do at this routing step. For example, sometimes a router forwards packets out an Ethernet interface. To encapsulate the IP packet, the router would need to build an Ethernet header, and that Ethernet header’s destination MAC address would need to list the correct value.

Note

El Router utiliza el protocolo ARP (Address Resolution Protocol) para verificar la dirección MAC del Host de Destino.