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-rwxr-xr-xsrc/conf_mode/dhcpv6_server.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/conf_mode/dhcpv6_server.py b/src/conf_mode/dhcpv6_server.py
index 175300bb0..e6a2e4486 100755
--- a/src/conf_mode/dhcpv6_server.py
+++ b/src/conf_mode/dhcpv6_server.py
@@ -128,7 +128,7 @@ def verify(dhcpv6):
# Subnets must be unique
if subnet in subnets:
- raise ConfigError('DHCPv6 subnets must be unique! Subnet {0} defined multiple times!'.format(subnet['network']))
+ raise ConfigError(f'DHCPv6 subnets must be unique! Subnet {subnet} defined multiple times!')
subnets.append(subnet)
# DHCPv6 requires at least one configured address range or one static mapping