$ ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
From 192.168.1.1 icmp_seq=1 Time to live exceeded
From 192.168.1.1 icmp_seq=2 Time to live exceeded
From 192.168.1.1 icmp_seq=3 Time to live exceeded
From 192.168.1.1 icmp_seq=4 Time to live exceeded
From 192.168.1.1 icmp_seq=5 Time to live exceeded
$ ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_seq=1 ttl=58 time=0.131 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=58 time=0.176 ms
64 bytes from 192.168.1.1: icmp_seq=3 ttl=58 time=0.146 ms
64 bytes from 192.168.1.1: icmp_seq=4 ttl=58 time=0.170 ms
分别列出ping 后的结果，Time to live exceeded 这种情况，就是网络不通。找网络同事搞问题吧。