diff --git a/xs.sh b/xs.sh
index 211a463..1c9e644 100644
--- a/xs.sh
+++ b/xs.sh
@@ -16,6 +16,11 @@ fi
 add_limit() {
     echo "Applying new bandwidth limit..."
 
+    # 确保加载 ifb 模块并启用 ifb0
+    modprobe ifb 2>/dev/null
+    ip link add ifb0 type ifb 2>/dev/null
+    ip link set ifb0 up 2>/dev/null
+
     # 清理旧规则
     tc qdisc del dev "$INTERFACE" root 2>/dev/null
     tc qdisc del dev ifb0 root 2>/dev/null