Xen dom0 vif-bridge script for dynamic vlans

vif-vlan-bridge.sh

#!/bin/bash

dir=$(dirname "$0")
. "$dir/vif-common.sh"

netdev=${netdev:-eth1}
vlan=${vlan:-0}
vlandev=$netdev.$vlan

retval=$( ip link show | grep $vlandev | wc -l )

if [ "$retval" == "0" ]; then
        echo "creating $vlandev" >&2
        ip link add link $netdev name $vlandev type vlan id $vlan >&2
        ip link set dev $vlandev up >&2
        . "$dir/network-bridge" start "netdev=$vlandev" bridge=$vlan
fi

. "$dir/vif-bridge" "$@" "bridge=$vlan" >&2