Nginx绑定IPv4和IPv6时80端口占用的解决

没有任何其他程序占用80端口，而是nginx自己先绑定了80端口，又重复绑定而造成的。有些人建议在nginx.conf文件中添加

listen [::]:80;

而事实上这种做法会导致重复绑定：

Starting nginx daemon: nginx[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: bind() to 0.0.0.0:80 failed (98: Address already in use)
[emerg]: still could not bind()
nginx already running.

在Nginx论坛看到的，同时绑定IPv4和IPv6地址时应当写为：

listen 80; listen [::]:80 ipv6only=on;

重启Nginx即可。

转自：管理员在2009年8月13日编辑了该文章文章。