diff --git a/scripts/install_pve.sh b/scripts/install_pve.sh
index 4e817cf..4b0c013 100644
--- a/scripts/install_pve.sh
+++ b/scripts/install_pve.sh
@@ -281,8 +281,10 @@ fi
 if [[ -f "/etc/network/interfaces.d/50-cloud-init" && -f "/etc/network/interfaces" ]]; then
     if grep -q "auto lo" "/etc/network/interfaces.d/50-cloud-init" && grep -q "iface lo inet loopback" "/etc/network/interfaces.d/50-cloud-init" && grep -q "auto lo" "/etc/network/interfaces" && grep -q "iface lo inet loopback" "/etc/network/interfaces"; then
         # 从 /etc/network/interfaces.d/50-cloud-init 中删除指定的行
+	chattr -i /etc/network/interfaces.d/50-cloud-init
         sed -i '/auto lo/d' "/etc/network/interfaces.d/50-cloud-init"
         sed -i '/iface lo inet loopback/d' "/etc/network/interfaces.d/50-cloud-init"
+	chattr +i /etc/network/interfaces.d/50-cloud-init
     fi
 fi