# Copyright 2019 VyOS maintainers and contributors <maintainers@vyos.io>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library.  If not, see <http://www.gnu.org/licenses/>.


from vyos.ifconfig.interface import Interface


class DummyIf(Interface):
    """
    A dummy interface is entirely virtual like, for example, the loopback
    interface. The purpose of a dummy interface is to provide a device to route
    packets through without actually transmitting them.
    """

    default = {
        'type': 'dummy',
    }

    def __init__(self, ifname, **kargs):
        super().__init__(ifname, **kargs)