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# Copyright (C) 2014 Rackspace, US Inc.
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#
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# Author: Nate House <nathan.house@rackspace.com>
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#
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# This file is part of cloud-init. See LICENSE file for license information.
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from cloudinit import distros
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from cloudinit import helpers
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from cloudinit import log as logging
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from cloudinit import util
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from cloudinit import subp
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from cloudinit.distros import net_util
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from cloudinit.distros.parsers.hostname import HostnameConf
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from cloudinit.net.renderers import RendererNotFoundError
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from cloudinit.settings import PER_INSTANCE
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import os
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LOG = logging.getLogger(__name__)
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class Distro(distros.Distro):
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locale_conf_fn = "/etc/locale.gen"
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network_conf_dir = "/etc/netctl"
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resolve_conf_fn = "/etc/resolv.conf"
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init_cmd = ['systemctl'] # init scripts
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renderer_configs = {
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"netplan": {"netplan_path": "/etc/netplan/50-cloud-init.yaml",
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"netplan_header": "# generated by cloud-init\n",
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"postcmds": True}
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}
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def __init__(self, name, cfg, paths):
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distros.Distro.__init__(self, name, cfg, paths)
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# This will be used to restrict certain
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# calls from repeatly happening (when they
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# should only happen say once per instance...)
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self._runner = helpers.Runners(paths)
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self.osfamily = 'arch'
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cfg['ssh_svcname'] = 'sshd'
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def apply_locale(self, locale, out_fn=None):
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if not out_fn:
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out_fn = self.locale_conf_fn
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subp.subp(['locale-gen', '-G', locale], capture=False)
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# "" provides trailing newline during join
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lines = [
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util.make_header(),
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'LANG="%s"' % (locale),
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"",
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]
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util.write_file(out_fn, "\n".join(lines))
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def install_packages(self, pkglist):
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self.update_package_sources()
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self.package_command('', pkgs=pkglist)
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def _write_network_config(self, netconfig):
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try:
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return self._supported_write_network_config(netconfig)
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except RendererNotFoundError as e:
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# Fall back to old _write_network
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raise NotImplementedError from e
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def _write_network(self, settings):
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entries = net_util.translate_network(settings)
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LOG.debug("Translated ubuntu style network settings %s into %s",
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settings, entries)
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return _render_network(
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entries, resolv_conf=self.resolve_conf_fn,
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conf_dir=self.network_conf_dir,
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enable_func=self._enable_interface)
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def _enable_interface(self, device_name):
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cmd = ['netctl', 'reenable', device_name]
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try:
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(_out, err) = subp.subp(cmd)
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if len(err):
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LOG.warning("Running %s resulted in stderr output: %s",
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cmd, err)
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except subp.ProcessExecutionError:
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util.logexc(LOG, "Running interface command %s failed", cmd)
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def _bring_up_interface(self, device_name):
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cmd = ['netctl', 'restart', device_name]
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LOG.debug("Attempting to run bring up interface %s using command %s",
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device_name, cmd)
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try:
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(_out, err) = subp.subp(cmd)
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if len(err):
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LOG.warning("Running %s resulted in stderr output: %s",
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cmd, err)
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return True
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except subp.ProcessExecutionError:
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util.logexc(LOG, "Running interface command %s failed", cmd)
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return False
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def _bring_up_interfaces(self, device_names):
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for d in device_names:
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if not self._bring_up_interface(d):
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return False
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return True
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def _write_hostname(self, your_hostname, out_fn):
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conf = None
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try:
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# Try to update the previous one
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# so lets see if we can read it first.
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conf = self._read_hostname_conf(out_fn)
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except IOError:
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pass
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if not conf:
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conf = HostnameConf('')
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conf.set_hostname(your_hostname)
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util.write_file(out_fn, str(conf), omode="w", mode=0o644)
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def _read_system_hostname(self):
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sys_hostname = self._read_hostname(self.hostname_conf_fn)
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return (self.hostname_conf_fn, sys_hostname)
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def _read_hostname_conf(self, filename):
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conf = HostnameConf(util.load_file(filename))
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conf.parse()
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return conf
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def _read_hostname(self, filename, default=None):
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hostname = None
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try:
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conf = self._read_hostname_conf(filename)
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hostname = conf.hostname
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except IOError:
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pass
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if not hostname:
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return default
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return hostname
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def set_timezone(self, tz):
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distros.set_etc_timezone(tz=tz, tz_file=self._find_tz_file(tz))
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def package_command(self, command, args=None, pkgs=None):
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if pkgs is None:
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pkgs = []
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cmd = ['pacman', "-Sy", "--quiet", "--noconfirm"]
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# Redirect output
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if args and isinstance(args, str):
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cmd.append(args)
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elif args and isinstance(args, list):
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cmd.extend(args)
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if command:
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cmd.append(command)
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pkglist = util.expand_package_list('%s-%s', pkgs)
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cmd.extend(pkglist)
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# Allow the output of this to flow outwards (ie not be captured)
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subp.subp(cmd, capture=False)
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def update_package_sources(self):
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self._runner.run("update-sources", self.package_command,
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["-y"], freq=PER_INSTANCE)
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def _render_network(entries, target="/", conf_dir="etc/netctl",
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resolv_conf="etc/resolv.conf", enable_func=None):
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"""Render the translate_network format into netctl files in target.
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Paths will be rendered under target.
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"""
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devs = []
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nameservers = []
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resolv_conf = subp.target_path(target, resolv_conf)
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conf_dir = subp.target_path(target, conf_dir)
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for (dev, info) in entries.items():
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if dev == 'lo':
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# no configuration should be rendered for 'lo'
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continue
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devs.append(dev)
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net_fn = os.path.join(conf_dir, dev)
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net_cfg = {
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'Connection': 'ethernet',
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'Interface': dev,
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'IP': info.get('bootproto'),
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'Address': "%s/%s" % (info.get('address'),
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info.get('netmask')),
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'Gateway': info.get('gateway'),
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'DNS': info.get('dns-nameservers', []),
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}
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util.write_file(net_fn, convert_netctl(net_cfg))
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if enable_func and info.get('auto'):
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enable_func(dev)
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if 'dns-nameservers' in info:
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nameservers.extend(info['dns-nameservers'])
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if nameservers:
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util.write_file(resolv_conf,
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convert_resolv_conf(nameservers))
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return devs
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def convert_netctl(settings):
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"""Given a dictionary, returns a string in netctl profile format.
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netctl profile is described at:
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https://git.archlinux.org/netctl.git/tree/docs/netctl.profile.5.txt
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Note that the 'Special Quoting Rules' are not handled here."""
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result = []
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for key in sorted(settings):
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val = settings[key]
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if val is None:
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val = ""
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elif isinstance(val, (tuple, list)):
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val = "(" + ' '.join("'%s'" % v for v in val) + ")"
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result.append("%s=%s\n" % (key, val))
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return ''.join(result)
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def convert_resolv_conf(settings):
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"""Returns a settings string formatted for resolv.conf."""
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result = ''
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if isinstance(settings, list):
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for ns in settings:
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result = result + 'nameserver %s\n' % ns
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return result
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# vi: ts=4 expandtab
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