#NEWLINE# @ staticmethod #NEWLINE# def ensure_vlan_bridge( vlan_num , bridge , bridge_interface , net_attrs = None , mac_address = None , mtu = None ) : #NEWLINE# #INDENT# 'Create a vlan and bridge unless they already exist.' #NEWLINE# interface = LinuxBridgeInterfaceDriver . ensure_vlan ( vlan_num , bridge_interface , mac_address , mtu ) #NEWLINE# LinuxBridgeInterfaceDriver . ensure_bridge ( bridge , interface , net_attrs ) #NEWLINE# return mac_address