diff --git a/10-white_ip b/10-white_ip
new file mode 100644
index 0000000..1aac614
--- /dev/null
+++ b/10-white_ip
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+WHITE=/opt/white_ip.sh
+[ "$INTERFACE" = "wan" ] && {
+	[ "$ACTION" = "ifup" ] && {
+		$WHITE >> /opt/white.log
+	}
+}
+
diff --git a/README.md b/README.md
index 1aff24c..f1b6dbf 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,10 @@
 # rt-white-ip
-Small bash script to reconnet when getting grey ip on Rostelecom
+Небольшой скрипт для переподключения при получении серого IP у Ростелекома.
+
+##Использование (на OpenWRT)
+
+1. Скопируйте файлы 10-white_ip и white_ip.sh в директорию /opt на роутере
+2. Сделайте их исполняемыми
+	```chmod +x /opt/10-white_ip /opt/white_ip.sh```
+3. Создайте ссылку на 10-white_ip в /etc/hotplug.d/iface/
+	```ln -s /opt/10-white_ip /etc/hotplug.d/iface/```
diff --git a/white_ip.sh b/white_ip.sh
new file mode 100644
index 0000000..477f114
--- /dev/null
+++ b/white_ip.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+net_addr="100.64.0.0"
+net_mask="10"
+
+ip2int ()
+{
+    local IFS=. ip num e
+    ip=($1)
+    for e in 3 2 1 0
+    do
+        (( num += ip[3-e] * 256 ** e ))
+    done
+    echo $num
+}
+
+start_int=`ip2int $net_addr`
+(( end_int = start_int + 2 ** ( 32 - net_mask ) ))
+
+#echo IP range is $start_int - $end_int
+
+ip=$(ip -f inet -o addr show pppoe-wan|cut -d\  -f 7 | cut -d/ -f 1)
+
+ip_int=`ip2int $ip`
+echo `date` Current IP is $ip "("$ip_int")"
+
+if [[ $ip_int -ge $start_int && $ip_int -le $end_int ]];
+then
+	echo `date` Grey IP received, restarting wan...
+        sleep 30
+	ifdown wan
+	sleep 30
+	ifup wan
+fi
+