sometimes caused by upstreams' firewall.
2010/1/6 Weibin Yao <nbubingo@gmail.com>:
> "No route to host" is the error string of system call connect. It's error
> value is 113. It means the server can't find the route to the backend
> server. This's the network problem, not nginx.
>
> --
> Weibin Yao
>
>
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--
Ren Xiaolei
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