diff --git a/README.md b/README.md
index 931dae4..0cb5b9a 100644
--- a/README.md
+++ b/README.md
@@ -37,4 +37,10 @@
 
 > `let wshost = 'localhost'; // WebSocketサーバのホスト名またはIPアドレス`
 
-> `let portNum = 8887;       // WebSocketサーバのポート番号`
\ No newline at end of file
+> `let portNum = 8887;       // WebSocketサーバのポート番号`
+
+大文字・小文字は厳密に区別されます。
+
+> 例： ```java -jar ServerTester-1.0-JARfile.jar web echo``` では起動しません。
+
+
diff --git a/src/main/java/info/istlab/ServerTester/AddPanel.java b/src/main/java/info/istlab/ServerTester/AddPanel.java
index ac6f0f0..604b9d4 100644
--- a/src/main/java/info/istlab/ServerTester/AddPanel.java
+++ b/src/main/java/info/istlab/ServerTester/AddPanel.java
@@ -121,6 +121,7 @@
                     System.out.println("IP Address: " + address.getHostAddress());
                     System.out.println("Subnet Mask: " + subnetMaskString);
                     System.out.println("Network Address: " + networkAddressString);
+                    UDPClient.networkAddress = networkAddressString;
                     addresses.add(address.getHostAddress());
                 }
             }
diff --git a/src/main/java/info/istlab/ServerTester/UDPClient.java b/src/main/java/info/istlab/ServerTester/UDPClient.java
index dfc502e..4a36106 100644
--- a/src/main/java/info/istlab/ServerTester/UDPClient.java
+++ b/src/main/java/info/istlab/ServerTester/UDPClient.java
@@ -8,8 +8,8 @@
 import javax.swing.JPanel;
 
 public class UDPClient {
-    public static void main(String[] args) {
-    }
+    public static String networkAddress;
+
     public UDPClient(JPanel mainPanel, int portnum) {
         // 情報収集
         StringBuffer sb = new StringBuffer();
@@ -30,7 +30,7 @@
             // クライアントソケットを作成
             socket = new DatagramSocket();
             socket.setBroadcast(true);
-            InetAddress serverAddress = InetAddress.getByName("255.255.255.255");
+            InetAddress serverAddress = InetAddress.getByName("10.104.91.255");
 
             // 送信メッセージを作成
             String message = sb.toString();