IPv6 Nginx On Multiple Sites

To configure Ipv6 on multiple domains on an nginx server you must include the

listen   [::]:80;

line in every server. The trick is to also include

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

onto the server server/domain that nginx is listening to.

Here is an example configuration with two sites both of which respond to IPv4 and Ipv6:


#first domain name config
server {
        listen   80; ## listen for ipv4; this line is default and implied
        listen   [::]:80 default_server ipv6only=on; ## listen for ipv6
  (...)
}

#second doamin name config server { listen 80; ## listen for ipv4; this line is default and implied listen [::]:80; ## listen for ipv6 (...) }

If you do anything else you will likely get errors that [::]:80 is already in use. Something like:

nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)