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test_service_dhcpv6-relay.py
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test_service_dhcpv6-relay.py
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#!/usr/bin/env python3
#
# Copyright (C) 2020 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import re
import os
import unittest
from vyos.configsession import ConfigSession
from vyos.configsession import ConfigSessionError
from vyos.ifconfig import Section
from vyos.template import address_from_cidr
from vyos.util import cmd
from vyos.util import process_named_running
from vyos.util import read_file
PROCESS_NAME = 'dhcrelay'
RELAY_CONF = '/run/dhcp-relay/dhcrelay6.conf'
base_path = ['service', 'dhcpv6-relay']
upstream_if = 'eth0'
upstream_if_addr = '2001:db8::1/64'
listen_addr = '2001:db8:ffff::1/64'
interfaces = []
class TestServiceDHCPv6Relay(unittest.TestCase):
def setUp(self):
self.session = ConfigSession(os.getpid())
for tmp in interfaces:
listen = listen_addr
if tmp == upstream_if:
listen = upstream_if_addr
self.session.set(['interfaces', 'ethernet', tmp, 'address', listen])
def tearDown(self):
self.session.delete(base_path)
for tmp in interfaces:
listen = listen_addr
if tmp == upstream_if:
listen = upstream_if_addr
self.session.delete(['interfaces', 'ethernet', tmp, 'address', listen])
self.session.commit()
del self.session
def test_relay_default(self):
dhcpv6_server = '2001:db8::ffff'
hop_count = '20'
self.session.set(base_path + ['use-interface-id-option'])
self.session.set(base_path + ['max-hop-count', hop_count])
# check validate() - Must set at least one listen and upstream
# interface addresses.
with self.assertRaises(ConfigSessionError):
self.session.commit()
self.session.set(base_path + ['upstream-interface', upstream_if, 'address', dhcpv6_server])
# check validate() - Must set at least one listen and upstream
# interface addresses.
with self.assertRaises(ConfigSessionError):
self.session.commit()
# add listener on all ethernet interfaces except the upstream interface
for tmp in interfaces:
if tmp == upstream_if:
continue
self.session.set(base_path + ['listen-interface', tmp, 'address', listen_addr.split('/')[0]])
# commit changes
self.session.commit()
# Check configured port
config = read_file(RELAY_CONF)
# Test configured upstream interfaces
self.assertIn(f'-u {dhcpv6_server}%{upstream_if}', config)
# Check listener on all ethernet interfaces
for tmp in interfaces:
if tmp == upstream_if:
continue
addr = listen_addr.split('/')[0]
self.assertIn(f'-l {addr}%{tmp}', config)
# Check hop count
self.assertIn(f'-c {hop_count}', config)
# Check Interface ID option
self.assertIn('-I', config)
# Check for running process
self.assertTrue(process_named_running(PROCESS_NAME))
if __name__ == '__main__':
for tmp in Section.interfaces('ethernet'):
if '.' not in tmp:
interfaces.append(tmp)
unittest.main(verbosity=2)

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