From 4a64349e3c02cb0c2f2105356d3de39843e45061 Mon Sep 17 00:00:00 2001
From: Christian Poessinger <christian@poessinger.com>
Date: Fri, 4 Dec 2020 14:16:14 +0100
Subject: pppoe: T3112: drop "ipv6 enable" option

IPv6 enable can be considered once the ipv6 node is present!
---
 data/templates/pppoe/ip-down.script.tmpl       |  2 +-
 data/templates/pppoe/peer.tmpl                 |  4 ++-
 interface-definitions/interfaces-pppoe.xml.in  |  6 ----
 smoketest/scripts/cli/test_interfaces_pppoe.py |  2 +-
 src/migration-scripts/interfaces/15-to-16      | 50 ++++++++++++++++++++++++++
 5 files changed, 55 insertions(+), 9 deletions(-)
 create mode 100755 src/migration-scripts/interfaces/15-to-16

diff --git a/data/templates/pppoe/ip-down.script.tmpl b/data/templates/pppoe/ip-down.script.tmpl
index c2d0cd09a..5e119f796 100644
--- a/data/templates/pppoe/ip-down.script.tmpl
+++ b/data/templates/pppoe/ip-down.script.tmpl
@@ -25,7 +25,7 @@ fi
 
 # Always delete default route when interface goes down
 vtysh -c "conf t" ${VRF_NAME} -c "no ip route 0.0.0.0/0 {{ ifname }} ${VRF_NAME}"
-{%   if ipv6_enable %}
+{%   if ipv6 is defined and ipv6.address is defined and ipv6.address.autoconf is defined %}
 vtysh -c "conf t" ${VRF_NAME} -c "no ipv6 route ::/0 {{ ifname }} ${VRF_NAME}"
 {%   endif %}
 {% endif %}
diff --git a/data/templates/pppoe/peer.tmpl b/data/templates/pppoe/peer.tmpl
index dd4272a98..db2cc6188 100644
--- a/data/templates/pppoe/peer.tmpl
+++ b/data/templates/pppoe/peer.tmpl
@@ -53,9 +53,11 @@ mru {{ mtu }}
 
 {{ "usepeerdns" if no_peer_dns is not defined }}
 
-{% if ipv6 is defined and ipv6.enable is defined %}
+{% if ipv6 is defined %}
 +ipv6
+{%   if ipv6.address is defined and ipv6.address.autoconf is defined %}
 ipv6cp-use-ipaddr
+{%   endif %}
 {% endif %}
 
 {% if service_name is defined %}
diff --git a/interface-definitions/interfaces-pppoe.xml.in b/interface-definitions/interfaces-pppoe.xml.in
index 38c01d434..7dccfbc9c 100644
--- a/interface-definitions/interfaces-pppoe.xml.in
+++ b/interface-definitions/interfaces-pppoe.xml.in
@@ -102,12 +102,6 @@
                   #include <include/ipv6-address-autoconf.xml.i>
                 </children>
               </node>
-              <leafNode name="enable">
-                <properties>
-                  <help>Activate IPv6 support on this connection</help>
-                  <valueless/>
-                </properties>
-              </leafNode>
             </children>
           </node>
           <leafNode name="source-interface">
diff --git a/smoketest/scripts/cli/test_interfaces_pppoe.py b/smoketest/scripts/cli/test_interfaces_pppoe.py
index 822f05de6..ec256cb43 100755
--- a/smoketest/scripts/cli/test_interfaces_pppoe.py
+++ b/smoketest/scripts/cli/test_interfaces_pppoe.py
@@ -108,7 +108,7 @@ class PPPoEInterfaceTest(unittest.TestCase):
             self.session.set(base_path + [interface, 'default-route', 'none'])
             self.session.set(base_path + [interface, 'no-peer-dns'])
             self.session.set(base_path + [interface, 'source-interface', self._source_interface])
-            self.session.set(base_path + [interface, 'ipv6', 'enable'])
+            self.session.set(base_path + [interface, 'ipv6', 'address', 'autoconf'])
 
             # prefix delegation stuff
             dhcpv6_pd_base = base_path + [interface, 'dhcpv6-options', 'pd', '0']
diff --git a/src/migration-scripts/interfaces/15-to-16 b/src/migration-scripts/interfaces/15-to-16
new file mode 100755
index 000000000..126911ccd
--- /dev/null
+++ b/src/migration-scripts/interfaces/15-to-16
@@ -0,0 +1,50 @@
+#!/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/>.
+
+# remove pppoe "ipv6 enable" option
+
+import os
+
+from sys import exit, argv
+from vyos.configtree import ConfigTree
+
+if __name__ == '__main__':
+    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 = ['interfaces', 'pppoe']
+
+    if not config.exists(base):
+        # Nothing to do
+        exit(0)
+
+    for interface in config.list_nodes(base):
+        ipv6_enable = base + [interface, 'ipv6', 'enable']
+        if config.exists(ipv6_enable):
+            config.delete(ipv6_enable)
+
+    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)
-- 
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