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-rw-r--r--python/vyos/configverify.py23
1 files changed, 20 insertions, 3 deletions
diff --git a/python/vyos/configverify.py b/python/vyos/configverify.py
index d1519b0ac..264dd1c30 100644
--- a/python/vyos/configverify.py
+++ b/python/vyos/configverify.py
@@ -91,9 +91,26 @@ def verify_dhcpv6(config):
Common helper function used by interface implementations to perform
recurring validation of DHCPv6 options which are mutually exclusive.
"""
- if {'parameters_only', 'temporary'} <= set(config.get('dhcpv6_options', {})):
- raise ConfigError('DHCPv6 temporary and parameters-only options '
- 'are mutually exclusive!')
+ if 'dhcpv6_options' in config:
+ from vyos.util import vyos_dict_search
+ if {'parameters_only', 'temporary'} <= set(config['dhcpv6_options']):
+ raise ConfigError('DHCPv6 temporary and parameters-only options '
+ 'are mutually exclusive!')
+
+ # It is not allowed to have duplicate SLA-IDs as those identify an
+ # assigned IPv6 subnet from a delegated prefix
+ for pd in vyos_dict_search(config, 'dhcpv6_options.pd'):
+ sla_ids = []
+ for interface in vyos_dict_search(config, f'dhcpv6_options.pd.{pd}.interface'):
+ sla_id = vyos_dict_search(config,
+ f'dhcpv6_options.pd.{pd}.interface.{interface}.sla_id')
+ sla_ids.append(sla_id)
+
+ # Check for duplicates
+ duplicates = [x for n, x in enumerate(sla_ids) if x in sla_ids[:n]]
+ if duplicates:
+ raise ConfigError('Site-Level Aggregation Identifier (SLA-ID) '
+ 'must be unique per prefix-delegation!')
def verify_vlan_config(config):
"""