#!/usr/bin/env python3 # # Copyright (C) 2023-2024 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 # published by the Free Software Foundation. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. from sys import exit from vyos.config import Config from vyos.utils.process import call from vyos import ConfigError from vyos import airbag airbag.enable() def get_config(config=None): if config: conf = config else: conf = Config() base = ['protocols', 'static', 'neighbor-proxy'] config = conf.get_config_dict(base, get_first_key=True) return config def verify(config): if 'arp' in config: for neighbor, neighbor_conf in config['arp'].items(): if 'interface' not in neighbor_conf: raise ConfigError( f"ARP neighbor-proxy for '{neighbor}' requires an interface to be set!" ) if 'nd' in config: for neighbor, neighbor_conf in config['nd'].items(): if 'interface' not in neighbor_conf: raise ConfigError( f"ARP neighbor-proxy for '{neighbor}' requires an interface to be set!" ) def generate(config): pass def apply(config): if not config: # Cleanup proxy call('ip neighbor flush proxy') call('ip -6 neighbor flush proxy') return None # Add proxy ARP if 'arp' in config: # Cleanup entries before config call('ip neighbor flush proxy') for neighbor, neighbor_conf in config['arp'].items(): for interface in neighbor_conf.get('interface'): call(f'ip neighbor add proxy {neighbor} dev {interface}') # Add proxy NDP if 'nd' in config: # Cleanup entries before config call('ip -6 neighbor flush proxy') for neighbor, neighbor_conf in config['nd'].items(): for interface in neighbor_conf['interface']: call(f'ip -6 neighbor add proxy {neighbor} dev {interface}') if __name__ == '__main__': try: c = get_config() verify(c) generate(c) apply(c) except ConfigError as e: print(e) exit(1)