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#!/bin/sh

[ -x /sbin/vconfig ] || exit 0
[ -d /proc/net/vlan ] || exit 0

case "$IFACE" in
        vlan*)
               	vconfig set_name_type VLAN_PLUS_VID_NO_PAD
               	VLANID=`echo $IFACE|sed "s/vlan*//"`
		;;
	eth*.*)
		vconfig set_name_type DEV_PLUS_VID_NO_PAD
		VLANID=`echo $IFACE|sed "s/eth[0-9][0-9]*\.*//g"`
		IF_VLAN_RAW_DEVICE=`echo $IFACE|sed "s/\(eth[0-9][0-9]*\)\..*/\1/"`
		;;
	*)
		exit 0
		;;
esac

if [ "$IF_VLAN_RAW_DEVICE" != "" ]; then
	if ! grep -q "$IF_VLAN_RAW_DEVICE" /proc/net/dev
	then
		echo "$IF_VLAN_RAW_DEVICE does not exist, unable to create $IFACE"
		exit 1
	fi
	ip link set up dev $IF_VLAN_RAW_DEVICE
	vconfig add $IF_VLAN_RAW_DEVICE $VLANID
	if [ "$IF_MAC_ADDRESS" != "" ]
	then
		ip link set $IF_VLAN_RAW_DEVICE.$VLANID address $IF_MAC_ADDRESS
	fi
	ip link set up dev $IF_VLAN_RAW_DEVICE.$VLANID
fi

exit 0