diff --git a/internal/csi-addons/networkfence/fencing_test.go b/internal/csi-addons/networkfence/fencing_test.go
index bbe82120d07..40242cf7907 100644
--- a/internal/csi-addons/networkfence/fencing_test.go
+++ b/internal/csi-addons/networkfence/fencing_test.go
@@ -68,6 +68,11 @@ func TestFetchIP(t *testing.T) {
 			expectedIP:  "172.21.9.34",
 			expectedErr: false,
 		},
+		{
+			clientInfo:  "client.4305 2001:0db8:85a3:0000:0000:8a2e:0370:7334:0/422650892",
+			expectedIP:  "2001:db8:85a3::8a2e:370:7334",
+			expectedErr: false,
+		},
 		{
 			clientInfo:  "",
 			expectedIP:  "",