PING aliyun-centos (139.224.235.47): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
64 bytes from 139.224.235.47: icmp_seq=0 ttl=50 time=3073.435 ms
64 bytes from 139.224.235.47: icmp_seq=1 ttl=50 time=2069.988 ms
64 bytes from 139.224.235.47: icmp_seq=2 ttl=50 time=1067.717 ms
64 bytes from 139.224.235.47: icmp_seq=3 ttl=50 time=66.781 ms
64 bytes from 139.224.235.47: icmp_seq=4 ttl=50 time=43.591 ms
64 bytes from 139.224.235.47: icmp_seq=5 ttl=50 time=44.175 ms
64 bytes from 139.224.235.47: icmp_seq=6 ttl=50 time=43.000 ms
64 bytes from 139.224.235.47: icmp_seq=7 ttl=50 time=41.247 ms
64 bytes from 139.224.235.47: icmp_seq=8 ttl=50 time=44.226 ms
64 bytes from 139.224.235.47: icmp_seq=9 ttl=50 time=41.328 ms
64 bytes from 139.224.235.47: icmp_seq=10 ttl=50 time=45.259 ms
64 bytes from 139.224.235.47: icmp_seq=11 ttl=50 time=43.248 ms
64 bytes from 139.224.235.47: icmp_seq=12 ttl=50 time=43.580 ms
64 bytes from 139.224.235.47: icmp_seq=13 ttl=50 time=43.213 ms
64 bytes from 139.224.235.47: icmp_seq=14 ttl=50 time=46.279 ms
64 bytes from 139.224.235.47: icmp_seq=15 ttl=50 time=47.223 ms
Request timeout for icmp_seq 19
Request timeout for icmp_seq 20
Request timeout for icmp_seq 21
Request timeout for icmp_seq 22
Request timeout for icmp_seq 23

感觉不能愉快玩耍了