I have the sollowing problem:
If i config all sites in one file all works finde, but if i have for
each host a own config than i get the error
nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)
my config File for the hosts looks like:
server {
listen 80; ## listen for ipv4; this line is default and implied
listen [::]:80 default_server ipv6only=on; ## listen for ipv6
Make site accessible from http://localhost/
server_name _;
return 444;
location ~ /.ht {
deny all;
}
}
server {
listen 80;
listen [2001:1010:18:697b::1]:80;
…
}
server {
listen 80;
listen [2001:1010:18:697b::2]:80;
…
}
server {
listen 80;
listen [2001:1010:18:697b::3]:80;
…
}
All server use The same IPV4 and a own IPV6.
But as i have say abdove this works only if all in the same file and not
splited to each own… 
Posted at Nginx Forum: