diff --git a/docs/en/docs/Virtualization/environment-preparation.md b/docs/en/docs/Virtualization/environment-preparation.md
index b9c39a0897156e257aca2b00c1e628b2fb393ce5..83abb75f6bb4f4ceee0ac658cef13f28aaf787e0 100644
--- a/docs/en/docs/Virtualization/environment-preparation.md
+++ b/docs/en/docs/Virtualization/environment-preparation.md
@@ -245,12 +245,16 @@ The following describes how to set up an Open vSwitch layer-1 bridge br0.
     ```
 
 4. Assign an IP address to OVS bridge br0.
-    - If a DHCP server is available, set a dynamic IP address through the dhclient.
+    
+    > ![](./public_sys-resources/icon-note.gif) **illustrate：**
+    > 
+    > If you use DHCP to set a dynamic IP address for br0, you need to clear the existing dynamic IP address. Run the dhclient -r command to clear the possible dynamic IP addresses.
 
+    - If a DHCP server is available, set a dynamic IP address through the dhclient.
         ```shell
         dhclient br0
         ```
-
+   
     - If no DHCP server is available, configure a static IP address for br0, for example, 192.168.1.2.
 
         ```shell