ping 不通IP的结果
root@firefly:/# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
From 192.168.100.58 icmp_seq=6 Destination Host Unreachable
From 192.168.100.58 icmp_seq=7 Destination Host Unreachable
From 192.168.100.58 icmp_seq=8 Destination Host Unreachable
From 192.168.100.58 icmp_seq=9 Destination Host Unreachable
^C
--- 8.8.8.8 ping statistics ---
11 packets transmitted, 0 received, +4 errors, 100% packet loss, time 10001ms
pipe 4
root@firefly:/# ping baidu.com
ping: baidu.com: Temporary failure in name resolution
ping 127.0.0.1
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.077 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.128 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.130 ms