When do I use nginx reverse proxy to proxy from an IPv4 network to an IPv6 network, I used the following configuration file: upstream ipv6server { server [2001:: 1]; server [2001:: 2]; } location / { proxy_pass http://ipv6server; } Nginx can start normally, but the start time, when I gave when the HTTP request, Nginx's CPU usage is particularly high, almost 100%, do not knoby wuweixin - Nginx Mailing List - English