diff --git a/br-ext-chip-hisilicon/board/hi3536dv100/kernel/hi3536dv100.generic.config b/br-ext-chip-hisilicon/board/hi3536dv100/kernel/hi3536dv100.generic.config
index c1d5c753..3deafcb6 100644
--- a/br-ext-chip-hisilicon/board/hi3536dv100/kernel/hi3536dv100.generic.config
+++ b/br-ext-chip-hisilicon/board/hi3536dv100/kernel/hi3536dv100.generic.config
@@ -2351,9 +2351,9 @@ CONFIG_ISO9660_FS=y
 #
 # DOS/FAT/NT Filesystems
 #
-CONFIG_FAT_FS=y
-CONFIG_MSDOS_FS=y
-CONFIG_VFAT_FS=y
+CONFIG_FAT_FS=m
+# CONFIG_MSDOS_FS is not set
+CONFIG_VFAT_FS=m
 CONFIG_FAT_DEFAULT_CODEPAGE=437
 CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
 # CONFIG_FAT_DEFAULT_UTF8 is not set
diff --git a/general/overlay/etc/network/interfaces b/general/overlay/etc/network/interfaces
index 8982bd1e..1767c73d 100644
--- a/general/overlay/etc/network/interfaces
+++ b/general/overlay/etc/network/interfaces
@@ -1,4 +1,3 @@
-# Interfaces
 
 auto lo
 iface lo inet loopback
@@ -6,12 +5,9 @@ iface lo inet loopback
 auto eth0
 iface eth0 inet dhcp
     hwaddress ether $(fw_printenv -n ethaddr || echo 00:24:B8:FF:FF:FF)
+    #udhcpc_opts -O search -O ntpsrv -O hostname
     #pre-up echo -e "nameserver 77.88.8.8\nnameserver 8.8.4.4\n" >/tmp/resolv.conf
-
-manual eth0:1
-iface eth0:1 inet static
-    address $(fw_printenv -n ipaddr || echo 192.168.1.10)
-    netmask 255.255.255.0
+    #pre-up echo -e "server 0.time.openipc.org iburst\nserver 1.time.openipc.org iburst\nserver 2.time.openipc.org iburst\nserver 3.time.openipc.org iburst" >/tmp/ntp.conf
 
 manual wlan0
 iface wlan0 inet dhcp
@@ -22,40 +18,12 @@ iface wlan0 inet dhcp
     pre-up modprobe mt7601u
     pre-up wpa_passphrase "SSID" "password" >/tmp/wpa_supplicant.conf
     pre-up sed -i '2i \\tscan_ssid=1' /tmp/wpa_supplicant.conf
-    pre-up (sleep 3; wpa_supplicant -B -D nl80211 -i wlan0 -c/tmp/wpa_supplicant.conf)
+    pre-up sleep 3
+    pre-up wpa_supplicant -B -D nl80211 -i wlan0 -c/tmp/wpa_supplicant.conf
     post-down killall -q wpa_supplicant
     post-down echo 1 > /sys/class/gpio/gpio7/value
     post-down echo 7 > /sys/class/gpio/unexport
 
-manual eth2
-iface eth2 inet dhcp
-    pre-up wifi xm711
-    pre-up wpa_passphrase "SSID" "password" >/tmp/wpa_supplicant.conf
-    pre-up sed -i '2i \\tscan_ssid=1' /tmp/wpa_supplicant.conf
-    pre-up (sleep 3; wpa_supplicant -B -D nl80211 -i eth2 -c/tmp/wpa_supplicant.conf)
-    post-down killall -q wpa_supplicant
-
-manual usb0
-iface usb0 inet dhcp
-    pre-up echo 9 > /sys/class/gpio/export
-    pre-up echo out > /sys/class/gpio/gpio9/direction
-    pre-up echo 0 > /sys/class/gpio/gpio9/value
-    pre-up modprobe usbserial vendor=0x2c7c product=0x6026
-    pre-up modprobe rndis_host
-    pre-up sleep 10
-    post-down echo 1 > /sys/class/gpio/gpio9/value
-    post-down echo 9 > /sys/class/gpio/unexport
-
-manual ppp0
-iface ppp0 inet manual
-    pre-up echo 61 > /sys/class/gpio/export
-    pre-up echo out > /sys/class/gpio/gpio61/direction
-    pre-up echo 0 > /sys/class/gpio/gpio61/value
-    pre-up (sleep 7; pon)
-    post-down poff
-    post-down echo 1 > /sys/class/gpio/gpio61/value
-    post-down echo 61 > /sys/class/gpio/unexport
-
 manual wg0
 iface wg0 inet static
     address 192.168.99.1
@@ -64,3 +32,6 @@ iface wg0 inet static
     pre-up ip link add dev wg0 type wireguard
     pre-up wg setconf wg0 /etc/wireguard.conf
     post-down ip link del dev wg0
+
+source-dir /etc/network/interfaces.d
+
diff --git a/general/overlay/etc/network/interfaces.d/eth0:1 b/general/overlay/etc/network/interfaces.d/eth0:1
new file mode 100644
index 00000000..5b077a87
--- /dev/null
+++ b/general/overlay/etc/network/interfaces.d/eth0:1
@@ -0,0 +1,5 @@
+
+manual eth0:1
+iface eth0:1 inet static
+    address $(fw_printenv -n ipaddr || echo 192.168.1.10)
+    netmask 255.255.255.0
diff --git a/general/overlay/etc/network/interfaces.d/eth2 b/general/overlay/etc/network/interfaces.d/eth2
new file mode 100644
index 00000000..19a53541
--- /dev/null
+++ b/general/overlay/etc/network/interfaces.d/eth2
@@ -0,0 +1,8 @@
+
+manual eth2
+iface eth2 inet dhcp
+    pre-up wifi xm711
+    pre-up wpa_passphrase "SSID" "password" >/tmp/wpa_supplicant.conf
+    pre-up sed -i '2i \\tscan_ssid=1' /tmp/wpa_supplicant.conf
+    pre-up (sleep 3; wpa_supplicant -B -D nl80211 -i eth2 -c/tmp/wpa_supplicant.conf)
+    post-down killall -q wpa_supplicant
diff --git a/general/overlay/etc/network/interfaces.d/ppp0 b/general/overlay/etc/network/interfaces.d/ppp0
new file mode 100644
index 00000000..8f3ff760
--- /dev/null
+++ b/general/overlay/etc/network/interfaces.d/ppp0
@@ -0,0 +1,9 @@
+
+manual ppp0
+iface ppp0 inet ppp
+    pre-up echo 61 > /sys/class/gpio/export
+    pre-up echo out > /sys/class/gpio/gpio61/direction
+    pre-up echo 0 > /sys/class/gpio/gpio61/value
+    pre-up sleep 7
+    post-down echo 1 > /sys/class/gpio/gpio61/value
+    post-down echo 61 > /sys/class/gpio/unexport
diff --git a/general/overlay/etc/network/interfaces.d/usb0 b/general/overlay/etc/network/interfaces.d/usb0
new file mode 100644
index 00000000..b7486141
--- /dev/null
+++ b/general/overlay/etc/network/interfaces.d/usb0
@@ -0,0 +1,11 @@
+
+manual usb0
+iface usb0 inet dhcp
+    pre-up echo 9 > /sys/class/gpio/export
+    pre-up echo out > /sys/class/gpio/gpio9/direction
+    pre-up echo 0 > /sys/class/gpio/gpio9/value
+    pre-up modprobe usbserial vendor=0x2c7c product=0x6026
+    pre-up modprobe rndis_host
+    pre-up sleep 10
+    post-down echo 1 > /sys/class/gpio/gpio9/value
+    post-down echo 9 > /sys/class/gpio/unexport
diff --git a/general/overlay/root/.ssh b/general/overlay/root/.ssh
new file mode 120000
index 00000000..5fc69082
--- /dev/null
+++ b/general/overlay/root/.ssh
@@ -0,0 +1 @@
+/etc/dropbear
\ No newline at end of file