请教高手，怎么用python2.5编写解析动态ip的软件

>>> import socket
>>> socket.getaddrinfo("www.google.com", 80)
4: [(2, 1, 6, '', ('74.125.115.104', 80)),
 (2, 2, 17, '', ('74.125.115.104', 80)),
 (2, 3, 0, '', ('74.125.115.104', 80)),
 (2, 1, 6, '', ('74.125.115.106', 80)),
 (2, 2, 17, '', ('74.125.115.106', 80)),
 (2, 3, 0, '', ('74.125.115.106', 80)),
 (2, 1, 6, '', ('74.125.115.103', 80)),
 (2, 2, 17, '', ('74.125.115.103', 80)),
 (2, 3, 0, '', ('74.125.115.103', 80)),
 (2, 1, 6, '', ('74.125.115.147', 80)),
 (2, 2, 17, '', ('74.125.115.147', 80)),
 (2, 3, 0, '', ('74.125.115.147', 80)),
 (2, 1, 6, '', ('74.125.115.105', 80)),
 (2, 2, 17, '', ('74.125.115.105', 80)),
 (2, 3, 0, '', ('74.125.115.105', 80)),
 (2, 1, 6, '', ('74.125.115.99', 80)),
 (2, 2, 17, '', ('74.125.115.99', 80)),
 (2, 3, 0, '', ('74.125.115.99', 80))]

------解决方案--------------------
如果是在客户端，则动态ip和静态ip没有什么区别。

如果你的程序是在服务器一端，想发布、更新你的ip地址，可以看看dyndnsc是怎么做的。

------解决方案--------------------
那得要有个中间的东西？比如两个QQ用户能通信，那是因为有腾讯服务器。


------解决方案--------------------
探讨


如果没有服务器呢？