diff --git a/projects/t31_vixand/general/overlay/etc/network/interfaces b/projects/t31_vixand/general/overlay/etc/network/interfaces
index 58e3286..e33128b 100644
--- a/projects/t31_vixand/general/overlay/etc/network/interfaces
+++ b/projects/t31_vixand/general/overlay/etc/network/interfaces
@@ -1,4 +1,3 @@
-# Interfaces
 
 auto lo
 iface lo inet loopback
@@ -9,12 +8,6 @@ iface eth0 inet static
     netmask 255.255.255.0
     hwaddress ether $(fw_printenv -n ethaddr || echo 00:24:B8:FF:FF:FF)
 
-auto 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
+
+source /etc/network/interfaces.d/ppp0
+
diff --git a/projects/t31_vixand/general/overlay/etc/network/interfaces.d/ppp0 b/projects/t31_vixand/general/overlay/etc/network/interfaces.d/ppp0
new file mode 100644
index 0000000..1998951
--- /dev/null
+++ b/projects/t31_vixand/general/overlay/etc/network/interfaces.d/ppp0
@@ -0,0 +1,9 @@
+
+auto 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