1 files changed, 57 insertions, 0 deletions
diff --git a/package/base-files-network/files/sbin/ifdown b/package/base-files-network/files/sbin/ifdown
new file mode 100755
index 0000000..1455a9d
--- /dev/null
+++ b/package/base-files-network/files/sbin/ifdown
@@ -0,0 +1,57 @@
+#!/bin/sh
+# Copyright (C) 2006-2011 OpenWrt.org
+
+. /etc/functions.sh
+[ $# = 0 ] && { echo "  $0 <group>"; exit; }
+
+case "$1" in
+	"-a")
+		[ -e "/tmp/resolv.conf.auto" ] && rm /tmp/resolv.conf.auto
+		config_cb() {
+			[ interface != "$1" -o -z "$2" ] || eval "$0 -w $2"
+		}
+		config_load network
+		exit 0
+	;;
+	"-w") shift ;;
+esac
+
+include /lib/network
+scan_interfaces
+
+cfg=$1
+debug "### ifdown $cfg ###"
+
+config_get proto "$cfg" proto
+[ -z "$proto" ] && { echo "interface not found."; exit; }
+
+config_get iface "$cfg" device
+[ "static" = "$proto" -o "none" = "$proto" ] && {
+	env -i ACTION="ifdown" INTERFACE="$cfg" DEVICE="$iface" PROTO="$proto" /sbin/hotplug-call "iface"
+}
+
+# call interface stop handler
+( type "stop_interface_$proto" ) >/dev/null 2>/dev/null && eval "stop_interface_$proto '$cfg'"
+
+config_get ifname "$cfg" ifname
+config_get device "$cfg" device
+
+[ ."$device" != ."$ifname" ] || device=
+for dev in $ifname $device; do
+	ifconfig "$dev" 0.0.0.0 down >/dev/null 2>/dev/null
+done
+
+config_get iftype "$cfg" type
+[ "bridge" = "$iftype" ] && brctl delbr "$ifname" >/dev/null 2>/dev/null
+
+# remove the interface's dns entries
+remove_dns "$cfg"
+
+# remove the interface's network state
+uci_revert_state network "$1"
+
+# revert aliases state as well
+config_get aliases "$1" aliases
+for config in $aliases; do
+	uci_revert_state network "$config"
+done