diff --git a/package/base-files/files/lib/functions/uci-defaults.sh b/package/base-files/files/lib/functions/uci-defaults.sh
new file mode 100644
index 00000000000..a1371e5e3b0
--- /dev/null
+++ b/package/base-files/files/lib/functions/uci-defaults.sh
@@ -0,0 +1,88 @@
+#!/bin/sh
+# Copyright (C) 2011 OpenWrt.org
+
+ucidef_set_interface_loopback() {
+	uci batch <<EOF
+set network.loopback='interface'
+set network.loopback.ifname='lo'
+set network.loopback.proto='static'
+set network.loopback.ipaddr='127.0.0.1'
+set network.loopback.netmask='255.0.0.0'
+EOF
+}
+
+ucidef_set_interface_raw() {
+	local cfg=$1
+	local ifname=$2
+
+	uci batch <<EOF
+set network.$cfg='interface'
+set network.$cfg.ifname='$ifname'
+set network.$cfg.proto='none'
+EOF
+}
+
+ucidef_set_interface_lan() {
+	local ifname=$1
+
+	uci batch <<EOF
+set network.lan='interface'
+set network.lan.ifname='$ifname'
+set network.lan.type='bridge'
+set network.lan.proto='static'
+set network.lan.ipaddr='192.168.1.1'
+set network.lan.netmask='255.255.255.0'
+EOF
+}
+
+ucidef_set_interface_wan() {
+	local ifname=$1
+
+	uci batch <<EOF
+set network.wan='interface'
+set network.wan.ifname='$ifname'
+set network.wan.proto='dhcp'
+EOF
+}
+
+ucidef_set_interfaces_lan_wan() {
+	local lan_ifname=$1
+	local wan_ifname=$2
+
+	ucidef_set_interface_lan "$lan_ifname"
+	ucidef_set_interface_wan "$wan_ifname"
+}
+
+ucidef_set_interface_macaddr() {
+	local ifname=$1
+	local mac=$2
+
+	uci batch <<EOF
+set network.$ifname.macaddr='$mac'
+EOF
+}
+
+ucidef_add_switch() {
+	local name=$1
+	local reset=$2
+	local enable=$3
+	uci batch <<EOF
+add network switch
+set network.@switch[-1].name='$name'
+set network.@switch[-1].reset='$reset'
+set network.@switch[-1].enable_vlan='$enable'
+EOF
+}
+
+ucidef_add_switch_vlan() {
+	local device=$1
+	local vlan=$2
+	local ports=$3
+	uci batch <<EOF
+add network switch_vlan
+set network.@switch_vlan[-1].device='$device'
+set network.@switch_vlan[-1].vlan='$vlan'
+set network.@switch_vlan[-1].ports='$ports'
+EOF
+}
+