stream{
    upstream udp1{
	   server 192.168.0.231:10011; 
	}
	upstream udp2{
	   server 192.168.0.231:10012; 
	}
	
	server{
	 listen 10011;
	 listen 10011 udp;
	 proxy_pass udp1;
	}
	
	server{
	 listen 10012;
	 listen 10012 udp;
	 proxy_pass udp2;
	}
}