PING ip.cn (127.0.0.1): 56 data bytes 64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0.080 ms 64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.065 ms 64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.063 ms 64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.143 ms 64 bytes from 127.0.0.1: icmp_seq=4 ttl=64 time=0.157 ms