Может кто напишет почему не работает ограничение?

[root@all /usr/home/alex]# nginx -V
nginx version: nginx/1.0.11
configure arguments: --prefix=/usr/local/etc/nginx --with-cc-opt='-I /usr/local/include' --with-ld-opt='-L /usr/local/lib' --conf-path=/usr/local/etc/nginx/nginx.conf --sbin-path=/usr/local/sbin/nginx --pid-path=/var/run/nginx.pid --error-log-path=/var/log/nginx-error.log --user=www --group=www --with-ipv6 --with-google_perftools_module --http-client-body-temp-path=/var/tmp/nginx/client_body_temp --http-fastcgi-temp-path=/var/tmp/nginx/fastcgi_temp --http-proxy-temp-path=/var/tmp/nginx/proxy_temp --http-scgi-temp-path=/var/tmp/nginx/scgi_temp --http-uwsgi-temp-path=/var/tmp/nginx/uwsgi_temp --http-log-path=/var/log/nginx-access.log --with-http_stub_status_module --with-pcre
[root@all /usr/home/alex]#

---------------
nginx.conf
events {
worker_connections 65536;
}

http {

#access_log off;
#error_log off;

limit_zone conn_from_one_ip $binary_remote_addr 16m;
limit_zone conn_from_one_ip_2 $binary_remote_addr 16m;
-------------------

server {
listen 80;
server_name site.ru;
proxy_temp_path /usr/local/etc/nginx/site;
limit_conn conn_from_one_ip_2 49;

location @nocached {

Правило не срабатывает