百度可以 ping 通,github 一直 ping 不通,但是网站可以上去,搞什么鬼啊。。。
➜ code date
2019 年 12 月 28 日 星期六 22 时 50 分 02 秒 CST
➜ code ping www.github.com
PING github.com (52.74.223.119): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
cRequest timeout for icmp_seq 3
Request timeout for icmp_seq 4
^C
--- github.com ping statistics ---
6 packets transmitted, 0 packets received, 100.0% packet loss
➜ code ping www.baidu.com
PING www.a.shifen.com (182.61.200.6): 56 data bytes
64 bytes from 182.61.200.6: icmp_seq=0 ttl=53 time=44.845 ms
64 bytes from 182.61.200.6: icmp_seq=1 ttl=53 time=10.667 ms
64 bytes from 182.61.200.6: icmp_seq=2 ttl=53 time=20.851 ms
64 bytes from 182.61.200.6: icmp_seq=3 ttl=53 time=16.743 ms
^C
--- www.a.shifen.com ping statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 10.667/23.276/44.845/12.969 ms
➜ code date
2019 年 12 月 28 日 星期六 22 时 50 分 02 秒 CST
➜ code ping www.github.com
PING github.com (52.74.223.119): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
cRequest timeout for icmp_seq 3
Request timeout for icmp_seq 4
^C
--- github.com ping statistics ---
6 packets transmitted, 0 packets received, 100.0% packet loss
➜ code ping www.baidu.com
PING www.a.shifen.com (182.61.200.6): 56 data bytes
64 bytes from 182.61.200.6: icmp_seq=0 ttl=53 time=44.845 ms
64 bytes from 182.61.200.6: icmp_seq=1 ttl=53 time=10.667 ms
64 bytes from 182.61.200.6: icmp_seq=2 ttl=53 time=20.851 ms
64 bytes from 182.61.200.6: icmp_seq=3 ttl=53 time=16.743 ms
^C
--- www.a.shifen.com ping statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 10.667/23.276/44.845/12.969 ms