test-network: add tests for duplicated address setting

Also, add more tests for PreferredLifetime=0

C.f. #20891.

diff --git a/test/test-network/conf/25-address-static.network b/test/test-network/conf/25-address-static.network
index 3227fe8dfd017a9fc8cb272d09212d56c2f9db23..6cde669dc51c8f6c19bb1e5f51783959928576e7 100644 (file)
--- a/test/test-network/conf/25-address-static.network
+++ b/test/test-network/conf/25-address-static.network
@@ -52,11 +52,19 @@ Peer=2001:db8:0:f103::10/128
 [Address]
 Address=::/64
 
+[Network]
+# this will later deduped by the following section
+Address=10.7.8.9/16
+
 [Address]
 Address=10.7.8.9/16
 PreferredLifetime=0
 Scope=link
 
+[Address]
+# this will also deduped
+Address=2001:0db8:1:f101::1/64
+
 [Address]
 Address=2001:0db8:1:f101::1/64
 PreferredLifetime=0

diff --git a/test/test-network/systemd-networkd-tests.py b/test/test-network/systemd-networkd-tests.py
index 354a6255f2d8de1f99e1ff2e7478534eb0488e10..5de2d3ae032559a1c3ea8fbd06726d2e95ff5fe4 100755 (executable)
--- a/test/test-network/systemd-networkd-tests.py
+++ b/test/test-network/systemd-networkd-tests.py
@@ -1993,9 +1993,29 @@ class NetworkdNetworkTests(unittest.TestCase, Utilities):
         self.assertIn('inet6 2001:db8:1:f101::1/64 scope global deprecated', output)
         self.assertRegex(output, r'inet6 fd[0-9a-f:]*1/64 scope global')
 
+        # Tests for #20891.
+        # 1. set preferred lifetime forever to drop the deprecated flag for testing #20891.
+        self.assertEqual(call('ip address change 10.7.8.9/16 dev dummy98 preferred_lft forever'), 0)
+        self.assertEqual(call('ip address change 2001:db8:1:f101::1/64 dev dummy98 preferred_lft forever'), 0)
+        output = check_output('ip -4 address show dev dummy98')
+        print(output)
+        self.assertNotIn('deprecated', output)
+        output = check_output('ip -6 address show dev dummy98')
+        print(output)
+        self.assertNotIn('deprecated', output)
+
+        # 2. restart networkd to reconfigure the interface.
         restart_networkd()
         self.wait_online(['dummy98:routable'])
 
+        # 3. check the deprecated flag is set for the address configured with PreferredLifetime=0
+        output = check_output('ip -4 address show dev dummy98')
+        print(output)
+        self.assertIn('inet 10.7.8.9/16 brd 10.7.255.255 scope link deprecated dummy98', output)
+        output = check_output('ip -6 address show dev dummy98')
+        print(output)
+        self.assertIn('inet6 2001:db8:1:f101::1/64 scope global deprecated', output)
+
         # test for ENOBUFS issue #17012
         output = check_output('ip -4 address show dev dummy98')
         for i in range(1,254):