1 files changed, 43 insertions, 0 deletions
diff --git a/src/migration-scripts/ntp/2-to-3 b/src/migration-scripts/ntp/2-to-3
new file mode 100644
index 0000000..bbda903
--- /dev/null
+++ b/src/migration-scripts/ntp/2-to-3
@@ -0,0 +1,43 @@
+# Copyright 2023-2024 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/>.
+
+# T5154: allow only one ip address per family for parameter 'listen-address'
+# Allow only one interface for parameter 'interface'
+# If more than one are specified, remove such entries
+
+from vyos.configtree import ConfigTree
+from vyos.template import is_ipv4
+from vyos.template import is_ipv6
+
+base_path = ['service', 'ntp']
+
+def migrate(config: ConfigTree) -> None:
+    if not config.exists(base_path):
+        # Nothing to do
+        return
+
+    if config.exists(base_path + ['listen-address']) and (len([addr for addr in config.return_values(base_path + ['listen-address']) if is_ipv4(addr)]) > 1):
+        for addr in config.return_values(base_path + ['listen-address']):
+            if is_ipv4(addr):
+                config.delete_value(base_path + ['listen-address'], addr)
+
+    if config.exists(base_path + ['listen-address']) and (len([addr for addr in config.return_values(base_path + ['listen-address']) if is_ipv6(addr)]) > 1):
+        for addr in config.return_values(base_path + ['listen-address']):
+            if is_ipv6(addr):
+                config.delete_value(base_path + ['listen-address'], addr)
+
+    if config.exists(base_path + ['interface']):
+        if len(config.return_values(base_path + ['interface'])) > 1:
+            config.delete(base_path + ['interface'])