Nginx 99% cpu if upstream server address is ipv6

Server NGINX
1

Hi,
I’m doing a test for nginx to proxy ipv6 requests,

client(v6)----(v6)nginx(v6)----(v6)www

The nginx CPU is 99%

According to the post in the mailing list, nginx doesn’t support ipv6
upstream, but
I think it is better report an error other than 99% cpu if ipv6
address is used in upstream.

BTW, any plan to support ipv6 upstream?

BR,

DeltaY

2

Hi,
i have the same problem. any new solutions ?

Regards, Eric

My Setup is:

WORLD → ( nginx ipv4 blancer ) → ( 3 ipv4 webserver )
WORLD → ( nginx ipv6 blancer ) → ( 3 ipv6 webserver )

My Config is:
upstream lb4 {
server XXX.XXX.XXX.XXX:80;
server XXX.XXX.XXX.XXX:80;
server XXX.XXX.XXX.XXX:80;
}
upstream lb6 {
server [xxxx:xxxx:xxxx::xxxx]:80;
server [xxxx:xxxx:xxxx::xxxx]:80;
server [xxxx:xxxx:xxxx::xxxx]:80;
}
server {
listen 80; ## listen for ipv4
server_name lb.netsyn.eu;

access_log  /var/log/nginx/xxx.xxx.eu.access.log;

location / {
        proxy_pass      http://lb4;
        proxy_redirect  off;
        proxy_next_upstream     error timeout invalid_header

http_500;
proxy_connect_timeout 2;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For
$proxy_add_x_forwarded_for;
}
}

server {
listen [::]:80 default ipv6only=on; ## listen for ipv6
server_name lb.netsyn.eu;

access_log  /var/log/nginx/xxx.xxxx.eu.access.log;

location / {
        proxy_pass      http://lb6;
        proxy_redirect  off;
        proxy_next_upstream     error timeout invalid_header

http_500;
proxy_connect_timeout 2;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For
$proxy_add_x_forwarded_for;
}
}

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