2 files changed, 54 insertions, 1 deletions
diff --git a/src/migration-scripts/pppoe-server/2-to-3 b/src/migration-scripts/pppoe-server/2-to-3
index fa6ef02da..5f9730a41 100755
--- a/src/migration-scripts/pppoe-server/2-to-3
+++ b/src/migration-scripts/pppoe-server/2-to-3
@@ -17,7 +17,6 @@
 # - remove primary/secondary identifier from nameserver
 
 import os
-import sys
 
 from sys import argv, exit
 from vyos.configtree import ConfigTree
diff --git a/src/migration-scripts/pppoe-server/3-to-4 b/src/migration-scripts/pppoe-server/3-to-4
new file mode 100755
index 000000000..ed5a01625
--- /dev/null
+++ b/src/migration-scripts/pppoe-server/3-to-4
@@ -0,0 +1,54 @@
+#!/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/>.
+
+# change mppe node to a leaf node with value prefer
+
+import os
+
+from sys import argv, exit
+from vyos.configtree import ConfigTree
+
+if (len(argv) < 1):
+    print("Must specify file name!")
+    exit(1)
+
+file_name = argv[1]
+
+with open(file_name, 'r') as f:
+    config_file = f.read()
+
+config = ConfigTree(config_file)
+base = ['service', 'pppoe-server']
+if not config.exists(base):
+    # Nothing to do
+    exit(0)
+else:
+    mppe_base = base + ['ppp-options', 'mppe']
+    if config.exists(mppe_base):
+        # drop node first ...
+        config.delete(mppe_base)
+        # ... and set new default
+        config.set(mppe_base, value='prefer')
+
+    print(config.to_string())
+    exit(1)
+
+    try:
+        with open(file_name, 'w') as f:
+            f.write(config.to_string())
+    except OSError as e:
+        print("Failed to save the modified config: {}".format(e))
+        exit(1)