hi, are its possible use ipv4 on domain and ipv6 on subdomain? i ask to my domain registrar and they say its possible to do. i set A record to @ and www with my ipv4 and AAAA record to ipv6 address. i use centminmod and here my setting for vhost subdomain

server {
listen 80;
server_name www.trial.example.com;
listen [2604:180:1::fd2c:e4xx]:80 ipv6only=on;
return 301 $scheme://trial.example.com$request_uri;

access_log /home/nginx/domains/trial.example.com/log/access.log combined buffer=256k flush=60m;
error_log /home/nginx/domains/trial.example.com/log/error.log;

root /home/nginx/domains/trial.example.com/public;
location ~ (?:^|/)\. {
deny all;
} 

location / {

}

include /usr/local/nginx/conf/staticfiles.conf;
include /usr/local/nginx/conf/php.conf;
include /usr/local/nginx/conf/drop.conf;
include /usr/local/nginx/conf/vts_server.conf;
}

i already change NGINX_IPV='y'
and now i can access my domain but not my subdomain. what i missed? can someone help solve this? thanks