IPV6错误: IP is not ICMP pingable. Please make sure ICMP is not blocked. If you are blocking ICMP

出现错误怎么办？

IP is not ICMP pingable. Please make sure ICMP is not blocked. If you are blocking ICMP, please allow 66.220.2.74 through your firewall.

意思就是说，ICMP不通。解决办法一般是修改路由器（或者防火墙）设置：

1、允许ICMP通过。

2、允许相应的SERVER IP通过。

不同路由器设置不同。