message: remove `::ffff:` also from fastcgi param `REMOTE_ADDR`
diff: @@ -5,6 +5,14 @@ if ($http_x_forwarded_proto = 'https') {
  set $fastcgi_port "443";
  }
  +set_by_lua_block $remote_addr_clean {
  + if string.find(ngx.var.remote_addr, "^::ffff:") then
  + return string.match(ngx.var.remote_addr, "^::ffff:(.*)"))
  + else
  + return ngx.var.remote_addr
  + end
  +}
  +
  fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
  fastcgi_param QUERY_STRING $query_string;
  fastcgi_param REQUEST_METHOD $request_method;
  @@ -23,7 +31,7 @@ fastcgi_param HTTPS $fastcgi_https if_not_empty;
  fastcgi_param GATEWAY_INTERFACE CGI/1.1;
  fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
  -fastcgi_param REMOTE_ADDR $remote_addr;
  +fastcgi_param REMOTE_ADDR $remote_addr_clean;
  fastcgi_param REMOTE_PORT $remote_port;
  fastcgi_param SERVER_ADDR $server_addr;
  