If an error occurs during the routing, such as when the selected route has a transmission problem that corrupts the frame, an Internet Control Message Protocol (ICMP) packet is delivered to the host, informing the host of the problem.
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- 如果在尋找路徑的過(guò)程中發(fā)生錯誤，比如當一條選中的路徑發(fā)生傳輸硬件故障從而破壞了幀時(shí)，一個(gè)互聯(lián)網(wǎng)控制信息協(xié)議（ICMP）數據包就送達發(fā)出此幀的主機，通知該機此幀數據發(fā)生了問(wèn)題。
