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test-network: add test case for sending DHCPv4 RELEASE message

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This commit is contained in:
Yu Watanabe
2026-03-11 08:45:28 +09:00
parent 6eaa5ba322
commit 5188882fbf
2 changed files with 73 additions and 2 deletions
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test/test-network/conf/25-dhcp-client-simple.network
+7
View File
@@ -0,0 +1,7 @@
# SPDX-License-Identifier: LGPL-2.1-or-later
[Match]
Name=client
[Network]
DHCP=ipv4
IPv6AcceptRA=no
test/test-network/systemd-networkd-tests.py
+66 -2
View File
@@ -869,13 +869,18 @@ def dnr_v6_instance_data(adn, addrs=None, prio=1, alpns=("dot",), dohpath=None):
return data
def start_dnsmasq(*additional_options, interface='veth-peer', ra_mode=None, ipv4_range='192.168.5.10,192.168.5.200', ipv4_router='192.168.5.1', ipv6_range='2600::10,2600::20'):
def start_dnsmasq(*additional_options, namespace=None, interface='veth-peer', ra_mode=None, ipv4_range='192.168.5.10,192.168.5.200', ipv4_router='192.168.5.1', ipv6_range='2600::10,2600::20'):
if ra_mode:
ra_mode = f',{ra_mode}'
else:
ra_mode = ''
command = (
if namespace:
ns_command = ('ip', 'netns', 'exec', namespace)
else:
ns_command = ()
command = ns_command + (
'dnsmasq',
f'--log-facility={dnsmasq_log_file}',
'--log-queries=extra',
@@ -1104,6 +1109,8 @@ def tear_down_common():
# 3. remove network namespace
call_quiet('ip netns del ns99')
call_quiet('ip netns del ns-bridge')
call_quiet('ip netns del ns-server')
# 4. remove links
flush_l2tp_tunnels()
@@ -7988,6 +7995,63 @@ class NetworkdDHCPClientTests(unittest.TestCase, Utilities):
self.teardown_nftset('addr4', 'network4', 'ifindex')
def test_dhcp_client_send_release(self):
check_output('ip netns add ns-bridge')
check_output('ip netns exec ns-bridge ip link add bridge99 type bridge')
check_output('ip netns exec ns-bridge ip link set bridge99 address 12:34:56:78:90:ab')
check_output('ip netns exec ns-bridge ip link set bridge99 up')
check_output('ip link add client type veth peer clientp')
check_output('ip link set clientp netns ns-bridge')
check_output('ip netns exec ns-bridge ip link set clientp master bridge99')
check_output('ip netns exec ns-bridge ip link set clientp up')
check_output('ip link add server type veth peer serverp')
check_output('ip link set serverp netns ns-bridge')
check_output('ip netns exec ns-bridge ip link set serverp master bridge99')
check_output('ip netns exec ns-bridge ip link set serverp up')
check_output('ip netns add ns-server')
check_output('ip link set server netns ns-server')
check_output('ip netns exec ns-server ip link set server up')
check_output('ip netns exec ns-server ip address add 192.0.2.1/24 dev server')
start_dnsmasq(
namespace='ns-server',
interface='server',
ipv4_range='192.0.2.100,192.0.2.109',
ipv4_router='192.0.2.1',
)
copy_network_unit('25-dhcp-client-simple.network')
start_networkd()
self.wait_online('client:routable')
print('## ip -4 address show dev client scope global')
output = check_output('ip -4 address show dev client scope global')
print(output)
self.assertRegex(output, r'192.0.2.10[0-9]/24')
print('## ip -4 route show dev client')
output = check_output('ip -4 route show dev client')
print(output)
self.assertRegex(output, r'default via 192.0.2.1 proto dhcp src 192.0.2.10[0-9]')
self.assertRegex(output, r'192.0.2.0/24 proto kernel scope link src 192.0.2.10[0-9]')
self.assertRegex(output, r'192.0.2.1 proto dhcp scope link src 192.0.2.10[0-9]')
networkctl('down', 'client')
print('## dnsmasq log')
for _ in range(20):
time.sleep(0.5)
output = read_dnsmasq_log_file()
if 'DHCPRELEASE' in output:
print(output)
break
else:
print(output)
self.fail('Timed out waiting for DHCPRELEASE in dnsmasq log')
def test_dhcp_client_ipv4_dbus_status(self):
copy_network_unit('25-veth.netdev', '25-dhcp-server-veth-peer.network', '25-dhcp-client-ipv4-only.network')
start_networkd()