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path: root/src/conf_mode/service_router-advert.py
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-rwxr-xr-xsrc/conf_mode/service_router-advert.py34
1 files changed, 24 insertions, 10 deletions
diff --git a/src/conf_mode/service_router-advert.py b/src/conf_mode/service_router-advert.py
index 71b758399..ff7caaa84 100755
--- a/src/conf_mode/service_router-advert.py
+++ b/src/conf_mode/service_router-advert.py
@@ -1,6 +1,6 @@
#!/usr/bin/env python3
#
-# Copyright (C) 2018-2021 VyOS maintainers and contributors
+# Copyright (C) 2018-2022 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
@@ -17,7 +17,7 @@
import os
from sys import exit
-
+from vyos.base import Warning
from vyos.config import Config
from vyos.configdict import dict_merge
from vyos.template import render
@@ -79,22 +79,35 @@ def verify(rtradv):
if 'interface' not in rtradv:
return None
- for interface in rtradv['interface']:
- interface = rtradv['interface'][interface]
+ for interface, interface_config in rtradv['interface'].items():
if 'prefix' in interface:
- for prefix in interface['prefix']:
- prefix = interface['prefix'][prefix]
- valid_lifetime = prefix['valid_lifetime']
+ for prefix, prefix_config in interface_config['prefix'].items():
+ valid_lifetime = prefix_config['valid_lifetime']
if valid_lifetime == 'infinity':
valid_lifetime = 4294967295
- preferred_lifetime = prefix['preferred_lifetime']
+ preferred_lifetime = prefix_config['preferred_lifetime']
if preferred_lifetime == 'infinity':
preferred_lifetime = 4294967295
if not (int(valid_lifetime) > int(preferred_lifetime)):
raise ConfigError('Prefix valid-lifetime must be greater then preferred-lifetime')
+ if 'name_server_lifetime' in interface_config:
+ # man page states:
+ # The maximum duration how long the RDNSS entries are used for name
+ # resolution. A value of 0 means the nameserver must no longer be
+ # used. The value, if not 0, must be at least MaxRtrAdvInterval. To
+ # ensure stale RDNSS info gets removed in a timely fashion, this
+ # should not be greater than 2*MaxRtrAdvInterval.
+ lifetime = int(interface_config['name_server_lifetime'])
+ interval_max = int(interface_config['interval']['max'])
+ if lifetime > 0:
+ if lifetime < int(interval_max):
+ raise ConfigError(f'RDNSS lifetime must be at least "{interval_max}" seconds!')
+ if lifetime > 2* interval_max:
+ Warning(f'RDNSS lifetime should not exceed "{2 * interval_max}" which is two times "interval max"!')
+
return None
def generate(rtradv):
@@ -105,15 +118,16 @@ def generate(rtradv):
return None
def apply(rtradv):
+ systemd_service = 'radvd.service'
if not rtradv:
# bail out early - looks like removal from running config
- call('systemctl stop radvd.service')
+ call(f'systemctl stop {systemd_service}')
if os.path.exists(config_file):
os.unlink(config_file)
return None
- call('systemctl restart radvd.service')
+ call(f'systemctl reload-or-restart {systemd_service}')
return None