#!/bin/sh

# Most of this stuff is to enable vlans, it's really only needed by bridge_utils
case "$IFACE" in
  # Ignore any alias (#272891) which uses <interface>:<alabel>
  *:*)
    exit 0
  ;;
  vlan[0-9]*)
    VLANID=`echo $IFACE|sed "s/vlan*//"`
  ;;
  *.[0-9]*)
    # Silently ignore interfaces which ifupdown handles on its own
    # If IF_BRIDGE_PORTS is set, probably we're called by bridge-utils
    [ -z "$IF_VLAN_RAW_DEVICE" -a -z "$IF_BRIDGE_PORTS" ] && exit 0
    VLANID=`echo $IFACE|sed "s/[a-zA-Z0-9]*\.//g"`
    IF_VLAN_RAW_DEVICE=`echo $IFACE|sed "s/\([a-zA-Z0-9]*\)\..*/\1/"`
  ;;

  *)
    exit 0
  ;;
esac

if [ -n "$IF_VLAN_RAW_DEVICE" ]; then
    if ! ip link show dev "$IF_VLAN_RAW_DEVICE" > /dev/null; then
        echo "$IF_VLAN_RAW_DEVICE does not exist, unable to create $IFACE"
        exit 1
    fi
    if [ ! -e "/sys/class/net/$IFACE" ]; then
        ip link set up dev $IF_VLAN_RAW_DEVICE
	ip link add link $IF_VLAN_RAW_DEVICE name $IFACE type vlan id $VLANID 
    fi

fi

# This is not vlan specific, and should actually go somewhere else.
if [ -n "$IF_HW_MAC_ADDRESS" ]; then
    ip link set $IFACE address $IF_HW_MAC_ADDRESS
fi