Could Nginx stream support FTP PASSIVE?

[Felix HT1 Zhang]

Dears,
Could Nginx stream support FTP PASSIVE?

#er  nobody;
worker_processes  4;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;

events {
    worker_connections  1024;
}

stream
{
   upstream port21
   {
      server 10.122.x.x:21 weight=1;
      server 10.122.x.xx:21 weight=1;
   }
   server
   {  listen 21;
      proxy_connect_timeout 60;
      proxy_pass port21;
   }
}
BR
Felix zhang
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