增加日志打印输出

src/main/java/com/tongran/agent/client/utils/AgentUtil.java

@@ -275,22 +275,26 @@ public class AgentUtil {
 
         while (interfaces.hasMoreElements()) {
             NetworkInterface ni = interfaces.nextElement();
+            String ipv4 = getIPv4Address(ni);
+            AssertLog.info("ipv4={}，接口状态={}",ipv4,ni.isUp());
 
             // 跳过回环、虚拟、关闭的接口
             if (ni.isLoopback() || ni.isVirtual() || !ni.isUp()) continue;
 
             // 判断是否为 Ethernet（通过名称约定：eth*, en*, 等）
             String name = ni.getName();
+            AssertLog.info("ipv4={}，名称={}",ipv4,name);
             if (!isEthernetInterface(name)) continue;
 
+            AssertLog.info("ipv4={}，物理链路状态={}",ipv4,isInterfaceConnected(name));
             // 检查是否“已连接”（物理链路状态）
             if (!isInterfaceConnected(name)) continue;
 
-            String ipv4 = getIPv4Address(ni);
             // 检查IP4信息
             if (ipv4.equals("N/A")) continue;
 
             String gateway = getGatewayAddress();
+            AssertLog.info("ipv4={}，网关={}",ipv4,gateway);
             // 检查IP4信息
             if (gateway.equals("N/A")) continue;