test-network: add tests for UseDNS= in [DHCP] section

5 files changed, 123 insertions, 0 deletions

diff --git a/test/test-network/conf/dhcp-client-use-dns-ipv4-and-ra.network b/test/test-network/conf/dhcp-client-use-dns-ipv4-and-ra.network
new file mode 100644
index 0000000000..ed5989555c
--- /dev/null
+++ b/test/test-network/conf/dhcp-client-use-dns-ipv4-and-ra.network
@@ -0,0 +1,11 @@
+[Match]
+Name=veth99
+
+[Network]
+DHCP=ipv4
+
+[DHCP]
+UseDNS=yes
+
+[IPv6AcceptRA]
+UseDNS=yes
diff --git a/test/test-network/conf/dhcp-client-use-dns-ipv4.network b/test/test-network/conf/dhcp-client-use-dns-ipv4.network
new file mode 100644
index 0000000000..dbd0f7f3fe
--- /dev/null
+++ b/test/test-network/conf/dhcp-client-use-dns-ipv4.network
@@ -0,0 +1,14 @@
+[Match]
+Name=veth99
+
+[Network]
+DHCP=ipv4
+
+[DHCPv4]
+UseDNS=yes
+
+[DHCPv6]
+UseDNS=no
+
+[IPv6AcceptRA]
+UseDNS=no
diff --git a/test/test-network/conf/dhcp-client-use-dns-no.network b/test/test-network/conf/dhcp-client-use-dns-no.network
new file mode 100644
index 0000000000..891efdbe12
--- /dev/null
+++ b/test/test-network/conf/dhcp-client-use-dns-no.network
@@ -0,0 +1,11 @@
+[Match]
+Name=veth99
+
+[Network]
+DHCP=yes
+
+[DHCP]
+UseDNS=no
+
+[IPv6AcceptRA]
+UseDNS=no
diff --git a/test/test-network/conf/dhcp-client-use-dns-yes.network b/test/test-network/conf/dhcp-client-use-dns-yes.network
new file mode 100644
index 0000000000..f38ffe36e3
--- /dev/null
+++ b/test/test-network/conf/dhcp-client-use-dns-yes.network
@@ -0,0 +1,11 @@
+[Match]
+Name=veth99
+
+[Network]
+DHCP=yes
+
+[DHCP]
+UseDNS=yes
+
+[IPv6AcceptRA]
+UseDNS=no
diff --git a/test/test-network/systemd-networkd-tests.py b/test/test-network/systemd-networkd-tests.py
index e2b4aae6ef..2e6ac2896d 100755
--- a/test/test-network/systemd-networkd-tests.py
+++ b/test/test-network/systemd-networkd-tests.py
@@ -2153,6 +2153,10 @@ class NetworkdDHCPClientTests(unittest.TestCase, Utilities):
         'dhcp-client-listen-port.network',
         'dhcp-client-route-metric.network',
         'dhcp-client-route-table.network',
+        'dhcp-client-use-dns-ipv4-and-ra.network',
+        'dhcp-client-use-dns-ipv4.network',
+        'dhcp-client-use-dns-no.network',
+        'dhcp-client-use-dns-yes.network',
         'dhcp-client-use-routes-no.network',
         'dhcp-client-vrf.network',
         'dhcp-client-with-ipv4ll-fallback-with-dhcp-server.network',
@@ -2674,6 +2678,78 @@ class NetworkdDHCPClientTests(unittest.TestCase, Utilities):
         self.assertRegex(output, f'default via 192.168.5.1 proto dhcp src {address2} metric 1024')
         self.assertRegex(output, f'192.168.5.1 proto dhcp scope link src {address2} metric 1024')
 
+    def test_dhcp_client_use_dns_yes(self):
+        copy_unit_to_networkd_unit_path('25-veth.netdev', 'dhcp-server-veth-peer.network', 'dhcp-client-use-dns-yes.network')
+
+        start_networkd()
+        wait_online(['veth-peer:carrier'])
+        start_dnsmasq('--dhcp-option=option:dns-server,192.168.5.1 --dhcp-option=option6:dns-server,[2600::1]')
+        wait_online(['veth99:routable', 'veth-peer:routable'])
+
+        # link become 'routable' when at least one protocol provide an valid address.
+        self.wait_address('veth99', r'inet 192.168.5.[0-9]*/24 brd 192.168.5.255 scope global dynamic', ipv='-4')
+        self.wait_address('veth99', r'inet6 2600::[0-9a-f]*/128 scope global (?:dynamic noprefixroute|noprefixroute dynamic)', ipv='-6')
+
+        time.sleep(3)
+        output = check_output(*resolvectl_cmd, 'dns', 'veth99', env=env)
+        print(output)
+        self.assertRegex(output, '192.168.5.1')
+        self.assertRegex(output, '2600::1')
+
+    def test_dhcp_client_use_dns_no(self):
+        copy_unit_to_networkd_unit_path('25-veth.netdev', 'dhcp-server-veth-peer.network', 'dhcp-client-use-dns-no.network')
+
+        start_networkd()
+        wait_online(['veth-peer:carrier'])
+        start_dnsmasq('--dhcp-option=option:dns-server,192.168.5.1 --dhcp-option=option6:dns-server,[2600::1]')
+        wait_online(['veth99:routable', 'veth-peer:routable'])
+
+        # link become 'routable' when at least one protocol provide an valid address.
+        self.wait_address('veth99', r'inet 192.168.5.[0-9]*/24 brd 192.168.5.255 scope global dynamic', ipv='-4')
+        self.wait_address('veth99', r'inet6 2600::[0-9a-f]*/128 scope global (?:dynamic noprefixroute|noprefixroute dynamic)', ipv='-6')
+
+        time.sleep(3)
+        output = check_output(*resolvectl_cmd, 'dns', 'veth99', env=env)
+        print(output)
+        self.assertNotRegex(output, '192.168.5.1')
+        self.assertNotRegex(output, '2600::1')
+
+    def test_dhcp_client_use_dns_ipv4(self):
+        copy_unit_to_networkd_unit_path('25-veth.netdev', 'dhcp-server-veth-peer.network', 'dhcp-client-use-dns-ipv4.network')
+
+        start_networkd()
+        wait_online(['veth-peer:carrier'])
+        start_dnsmasq('--dhcp-option=option:dns-server,192.168.5.1 --dhcp-option=option6:dns-server,[2600::1]')
+        wait_online(['veth99:routable', 'veth-peer:routable'])
+
+        # link become 'routable' when at least one protocol provide an valid address.
+        self.wait_address('veth99', r'inet 192.168.5.[0-9]*/24 brd 192.168.5.255 scope global dynamic', ipv='-4')
+        self.wait_address('veth99', r'inet6 2600::[0-9a-f]*/128 scope global (?:dynamic noprefixroute|noprefixroute dynamic)', ipv='-6')
+
+        time.sleep(3)
+        output = check_output(*resolvectl_cmd, 'dns', 'veth99', env=env)
+        print(output)
+        self.assertRegex(output, '192.168.5.1')
+        self.assertNotRegex(output, '2600::1')
+
+    def test_dhcp_client_use_dns_ipv4_and_ra(self):
+        copy_unit_to_networkd_unit_path('25-veth.netdev', 'dhcp-server-veth-peer.network', 'dhcp-client-use-dns-ipv4-and-ra.network')
+
+        start_networkd()
+        wait_online(['veth-peer:carrier'])
+        start_dnsmasq('--dhcp-option=option:dns-server,192.168.5.1 --dhcp-option=option6:dns-server,[2600::1]')
+        wait_online(['veth99:routable', 'veth-peer:routable'])
+
+        # link become 'routable' when at least one protocol provide an valid address.
+        self.wait_address('veth99', r'inet 192.168.5.[0-9]*/24 brd 192.168.5.255 scope global dynamic', ipv='-4')
+        self.wait_address('veth99', r'inet6 2600::[0-9a-f]*/128 scope global (?:dynamic noprefixroute|noprefixroute dynamic)', ipv='-6')
+
+        time.sleep(3)
+        output = check_output(*resolvectl_cmd, 'dns', 'veth99', env=env)
+        print(output)
+        self.assertRegex(output, '192.168.5.1')
+        self.assertRegex(output, '2600::1')
+
 if __name__ == '__main__':
     parser = argparse.ArgumentParser()
     parser.add_argument('--build-dir', help='Path to build dir', dest='build_dir')