Firefox DNS缓存清理工具 DNS Flusher

A Mozilla Firefox add-on that provides a easy way to reload the browser DNS cache.
It's commonly used by developers that uses the Hosts File to force a domain name resolution to a specific IP.
https://addons.mozilla.org/zh-CN/firefox/addon/dns-flusher/
同类扩展：Change Hosts  https://addons.mozilla.org/zh-cn/firefox/addon/change-hosts/?src=dp-dl-othersby

迟到了千年：把火狐的DNS缓存禁用掉，用DnsSpeeder或者Acrylic DNS Proxy不是更好，系统其它的联网软件也可以用。回到原帖

很多时候firefox打不开页面，我们需要的只是刷新下DNS缓存，但是firefox独特的缓存机制，要么禁用要么重启firefox，用了这个就可以实时刷新！