#!/usr/bin/env python3 # # Copyright (C) 2022 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/>. import os from sys import exit, argv from vyos.configtree import ConfigTree if (len(argv) < 1): print("Must specify file name!") exit(1) file_name = argv[1] with open(file_name, 'r') as f: config_file = f.read() base = ['system', 'ipv6'] config = ConfigTree(config_file) if not config.exists(base): # Nothing to do exit(0) # T4346: drop support to disbale IPv6 address family within the OS Kernel if config.exists(base + ['disable']): config.delete(base + ['disable']) # IPv6 address family disable was the only CLI option set - we can cleanup # the entire tree if len(config.list_nodes(base)) == 0: config.delete(base) try: with open(file_name, 'w') as f: f.write(config.to_string()) except OSError as e: print(f'Failed to save the modified config: {e}') exit(1)