本地机器 ping 中转的延时如下
64 bytes from xxxx: icmp_seq=0 ttl=64 time=0.737 ms
64 bytes from xxxx: icmp_seq=1 ttl=64 time=0.260 ms
64 bytes from xxxx: icmp_seq=2 ttl=64 time=0.359 ms
64 bytes from xxxx: icmp_seq=3 ttl=64 time=0.633 ms
64 bytes from xxxx: icmp_seq=4 ttl=64 time=0.291 ms
64 bytes from xxxx: icmp_seq=5 ttl=64 time=0.398 ms
64 bytes from xxxx: icmp_seq=6 ttl=64 time=0.409 ms
64 bytes from xxxx: icmp_seq=7 ttl=64 time=0.271 ms
64 bytes from xxxx: icmp_seq=8 ttl=64 time=0.539 ms
64 bytes from xxxx: icmp_seq=9 ttl=64 time=1.017 ms
64 bytes from xxxx: icmp_seq=10 ttl=64 time=0.397 ms
64 bytes from xxxx: icmp_seq=11 ttl=64 time=0.231 ms
64 bytes from xxxx: icmp_seq=12 ttl=64 time=0.373 ms
64 bytes from xxxx: icmp_seq=13 ttl=64 time=0.310 ms
64 bytes from xxxx: icmp_seq=14 ttl=64 time=0.333 ms
64 bytes from xxxx: icmp_seq=15 ttl=64 time=0.420 ms
64 bytes from xxxx: icmp_seq=16 ttl=64 time=0.399 ms
64 bytes from xxxx: icmp_seq=17 ttl=64 time=0.352 ms
64 bytes from xxxx: icmp_seq=18 ttl=64 time=0.231 ms
64 bytes from xxxx: icmp_seq=19 ttl=64 time=0.378 ms
64 bytes from xxxx: icmp_seq=20 ttl=64 time=0.475 ms
64 bytes from xxxx: icmp_seq=21 ttl=64 time=0.384 ms
64 bytes from xxxx: icmp_seq=22 ttl=64 time=0.346 ms
64 bytes from xxxx: icmp_seq=23 ttl=64 time=0.268 ms
64 bytes from xxxx: icmp_seq=24 ttl=64 time=0.961 ms
64 bytes from xxxx: icmp_seq=25 ttl=64 time=0.575 m
