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-rw-r--r--python/vyos/configverify.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/python/vyos/configverify.py b/python/vyos/configverify.py
index 48c858ba4..b4447306e 100644
--- a/python/vyos/configverify.py
+++ b/python/vyos/configverify.py
@@ -193,9 +193,11 @@ def verify_dhcpv6(config):
raise ConfigError('DHCPv6-PD requires an interface where to assign '
'the delegated prefix!')
- for interface in interfaces:
+ for count, interface in enumerate(interfaces):
if 'sla_id' in interfaces[interface]:
sla_ids.append(interfaces[interface]['sla_id'])
+ else:
+ sla_ids.append(str(count))
# Check for duplicates
duplicates = [x for n, x in enumerate(sla_ids) if x in sla_ids[:n]]