apache2.2作iis代理 出现 502Proxy Error错误
页面偶尔出现:
Proxy Error
The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request GET /2010/en/product.asp.
Reason: DNS lookup failure for:

apache 错误日志:
Proxy :DNS lookup failure for:


[解决办法]
配置错了吧，应该加上IP如 http://localhost:81/2010/en/product.asp