支持获取IPV4地址的网址列表：
http://checkip.dyndns.com
https://ip.tool.chinaz.com
https://myip.ipip.net
https://ip.cn
http://www.ip138.com
http://ip.zxinc.org/getip
https://v4.ipv6-test.com/api/myip.php
https://pv.sohu.com/cityjson
支持获取IPV6地址的网址列表：
https://v4v6.ipv6-test.com/api/myip.php (V4 & V6)
http://v6.ip.zxinc.org/getip
https://v6.ipv6-test.com/api/myip.php
