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authorChristian Poessinger <christian@poessinger.com>2020-08-22 23:15:29 +0200
committerChristian Poessinger <christian@poessinger.com>2020-08-22 23:29:11 +0200
commit98c2c5e0585e0806099a353de207f392223eff9a (patch)
tree1196c011cb24b099cc73d87d13aa5f9c97f33472 /src/migration-scripts/interfaces/11-to-12
parent50a7544ad69cb7b631a499299f9ab32b2e8918a0 (diff)
downloadvyos-1x-98c2c5e0585e0806099a353de207f392223eff9a.tar.gz
vyos-1x-98c2c5e0585e0806099a353de207f392223eff9a.zip
dhcpv6-pd: T2677: optimize CLI interface for PD configuration
The current CLI did not support multiple prefix-delegations per interface. Some ISPs only send one /64 to a client per prefix-delegation request, but they allow the customer to request multiple prefixes. The 'dhcpv6-options prefix-delegation' node has been renamed and converted to a tag node named 'dhcpv6-options pd'. The tag node specifies a PD request (>=0). In the past the user needed to know what prefix will be assigned and required to calculate the sla-len by himself. The 'sla-len' node was dropped and is now calculated in the background from the 'dhcpv6-options pd 0 length' node. It is no longer mandatory to supply the 'sla-id' node, if sla-id is not specified it is 'guessed' by counting upwards. Example configuration: ---------------------- ethernet eth1 { address dhcpv6 dhcpv6-options { pd 0 { length 56 interface eth2 { address 1 } } } } This will request a /56 assignment from the ISP and will delegate a /64 network to interface eth2. VyOS will use the interface address ::1 on the delegate interface (eth2) as its local address.
Diffstat (limited to 'src/migration-scripts/interfaces/11-to-12')
-rwxr-xr-xsrc/migration-scripts/interfaces/11-to-1258
1 files changed, 58 insertions, 0 deletions
diff --git a/src/migration-scripts/interfaces/11-to-12 b/src/migration-scripts/interfaces/11-to-12
new file mode 100755
index 000000000..0dad24642
--- /dev/null
+++ b/src/migration-scripts/interfaces/11-to-12
@@ -0,0 +1,58 @@
+#!/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/>.
+
+# - rename 'dhcpv6-options prefix-delegation' from single node to a new tag node
+# 'dhcpv6-options pd 0'
+# - delete 'sla-len' from CLI - value is calculated on demand
+
+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)
+
+ for type in config.list_nodes(['interfaces']):
+ for interface in config.list_nodes(['interfaces', type]):
+ # cache current config tree
+ base_path = ['interfaces', type, interface, 'dhcpv6-options']
+ old_base = base_path + ['prefix-delegation']
+ new_base = base_path + ['pd']
+ if config.exists(old_base):
+ config.set(new_base)
+ config.set_tag(new_base)
+ config.copy(old_base, new_base + ['0'])
+ config.delete(old_base)
+
+ for pd in config.list_nodes(new_base):
+ for tmp in config.list_nodes(new_base + [pd, 'interface']):
+ sla_config = new_base + [pd, 'interface', tmp, 'sla-len']
+ if config.exists(sla_config):
+ config.delete(sla_config)
+
+ 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)