最近我发现发送给我的一些 ping 出现TTL错误。当有人 ping 我的计算机时，它会TTL为每个数据包显示不同的值。
例如，ping.eu 显示：
--- PING 78.188.216.242 (78.188.216.242) 56(84) bytes of data. ---
64 bytes from 78.188.216.242: icmp_req=1 ttl=112 time=78.7 ms
64 bytes from 78.188.216.242: icmp_req=2 ttl=17 time=78.8 ms
64 bytes from 78.188.216.242: icmp_req=3 ttl=206 time=78.7 ms
64 bytes from 78.188.216.242: icmp_req=4 ttl=212 time=78.7 ms
--- 78.188.216.242 ping statistics ---
packets transmitted 4
received 4
packet loss 0 %
time 3002 ms
--- Round Trip Time (rtt) ---
min 78.734 ms
avg 78.782 …