target/linux/lantiq/base-files/etc/uci-defaults/04_network-switchX-migration

#!/bin/sh
#
# Copyright (C) 2013 OpenWrt.org
#

SWITCH_NAME_CHANGED=

do_change_switch_name() {
	local config="$1"
	local option=$2
	local oldname=$3
	local newname=$4
	local val

	config_get val "$config" $option
	[ "$val" != "$oldname" ] && return 0

	uci_set network "$config" $option $newname
	SWITCH_NAME_CHANGED=1

	return 0
}

migrate_switch_name() {
	local oldname=$1
	local newname=$2

	. /lib/functions.sh

	config_load network

	logger -t migrate-switchX "Updating switch names in network configuration"

	config_foreach do_change_switch_name switch name $oldname $newname
	config_foreach do_change_switch_name switch_vlan device $oldname $newname

	[ "$SWITCH_NAME_CHANGED" == "1" ] && {
		logger -t migrate-switchX "Switch names updated, saving network configuration"
		uci commit network
	}
}

. /lib/functions/lantiq.sh

board=$(lantiq_board_id)

case "$board" in
WBMR|ARV4519PW|ARV7518PW)
	migrate_switch_name "eth0" "switch0"
	;;
esac

exit 0