server {
    listen 5053;

    access_log off;
    gzip off;
    default_type text/plain;

    if ($remote_addr ~* 172\.16\.1\.(.+)){
        return 200 "$remote_addr (This is a local VPN ip, it is NOT your true external ip!)";
    }

    if ($remote_addr ~* 192\.168\.122\.1){
        return 200 $http_x_real_ip;
    }

    location / {
        return 200 $remote_addr;
    }
}