127.0.0.1代表自己机器回路地址无论否联网自己机器都127.0.0.1
而127段保留区段127.0.0.2现实上根本用IP只理论上地址
应该现网络设备种特性吧任何ping向保留区段127都会指向127.0.0.1自己试试看下面结
ping 127.0.0.254
Pinging 127.0.0.254 with 32 bytes of data:
Reply from 127.0.0.1: bytes=32 time<1ms TTL=64
Reply from 127.0.0.1: bytes=32 time<1ms TTL=64
Reply from 127.0.0.1: bytes=32 time<1ms TTL=64
Reply from 127.0.0.1: bytes=32 time<1ms TTL=64
Ping statistics for 127.0.0.254:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms |