diff options
Diffstat (limited to 'python')
| -rw-r--r-- | python/vyos/vpp/config_verify.py | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/python/vyos/vpp/config_verify.py b/python/vyos/vpp/config_verify.py index 5c8953392..7b90b37db 100644 --- a/python/vyos/vpp/config_verify.py +++ b/python/vyos/vpp/config_verify.py @@ -341,3 +341,27 @@ def verify_vpp_buffers(settings: dict): 'Not enough buffers to initialize RX/TX queues for interfaces. ' f'Set "vpp settings resource-allocation buffers buffers-per-numa" to {buffers_required} or higher' ) + + +def verify_nat_interfaces(config: dict, feature_name: str): + """ + Verify that interfaces are not already used in the selected NAT feature. + Example: + verify_nat_interfaces(config, 'nat44') + verify_nat_interfaces(config, 'cgnat') + """ + directions = ['inside', 'outside'] + interfaces = config.get('interface', {}) + nat_interfaces = config.get(f'{feature_name}_config', {}).get('interface', {}) + + for direction in directions: + for iface in interfaces.get(direction, []): + # Check if iface is used in any nat44/cgnat direction + nat_dir = next( + (d for d in directions if iface in nat_interfaces.get(d, [])), None + ) + if nat_dir: + raise ConfigError( + f'Cannot use {iface} as {direction} interface: ' + f'it is already configured as {nat_dir} interface in {feature_name.upper()}' + ) |