ARP gratuito

gratuitous ARP

Estrutura de solicitação de protocolo de resolução de endereços (ARP) enviada por um host para o endereço IP do próprio host quando o protocolo TCP/IP obtém informações de endereçamento. Os ARPs gratuitos são usados para verificar endereços IP duplicados na sub-rede. Se o host receber uma resposta à solicitação do ARP gratuito de outro host ou computador, ele detectará um conflito para seu endereço IP configurado e não o usará.
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gratuitous ARP

endereço de base
