diff --git a/day01-image/files/root/interfaces b/day01-image/files/root/interfaces
new file mode 100644
index 0000000..944ae9f
--- /dev/null
+++ b/day01-image/files/root/interfaces
@@ -0,0 +1,18 @@
+# This file describes the network interfaces available on your system
+# and how to activate them. For more information, see interfaces(5).
+
+source /etc/network/interfaces.d/*
+
+# The loopback network interface
+auto lo
+iface lo inet loopback
+
+# The primary network interface
+auto ens3
+iface ens3 inet static
+  address $SALT_MASTER_DEPLOY_IP
+  netmask $SALT_MASTER_DEPLOY_NETMASK
+#auto ens4
+#iface ens4 inet static
+#  address $SALT_MASTER_CONTROL_IP
+#  netmask $SALT_MASTER_CONTROL_NETMASK
\ No newline at end of file