图21.6代理ARP 141.23.56.21141.23.56.22 141.23.56.23 The proxy ARP router replies to any ARP request received for destinations 141.23.56.21, Added subnetwork 141.23.56.22,and141.23.56.23. Proxy ARP router Request Router or host 21.11 21.11 图 21.6 代理ARP