dns 直接怼到美西去了 

PING google.com (2607:f8b0:4002:c08::71) 56 data bytes64 bytes from yx-in-x71.1e100.net (2607:f8b0:4002:c08::71): icmp_seq=1 ttl=111 time=148 ms64 bytes from yx-in-x71.1e100.net (2607:f8b0:4002:c08::71): icmp_seq=2 ttl=111 time=148 ms^C--- google.com ping statistics ---3 packets transmitted, 2 received, 33.3333% packet loss, time 2003msrtt min/avg/max/mdev = 148.494/148.495/148.496/0.001 ms