old_contents: # Copyright 2014 NEC Corporation
  #
  #    Licensed under the Apache License, Version 2.0 (the "License"); you may
  #    not use this file except in compliance with the License. You may obtain
  #    a copy of the License at
  #
  #         http://www.apache.org/licenses/LICENSE-2.0
  #
  #    Unless required by applicable law or agreed to in writing, software
  #    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  #    License for the specific language governing permissions and limitations
  #    under the License.
  
  from django.utils.translation import ugettext_lazy as _
  
  IPV6_DEFAULT_MODE = 'none/none'
  IPV6_MODE_CHOICES = [
      ('none/none',
       _('No options specified')),
      ('slaac/slaac',
       _('SLAAC: Address discovered from OpenStack Router')),
      ('dhcpv6-stateful/dhcpv6-stateful',
       _('DHCPv6 stateful: Address discovered from OpenStack DHCP')),
      ('dhcpv6-stateless/dhcpv6-stateless',
       _('DHCPv6 stateless: Address discovered from OpenStack Router '
         'and additional information from OpenStack DHCP')),
  ]
  IPV6_MODE_MAP = dict(IPV6_MODE_CHOICES)
  
  
  def get_ipv6_modes_menu_from_attrs(ipv6_ra_mode, ipv6_address_mode):
      ipv6_modes = '%s/%s' % (str(ipv6_ra_mode).lower(),
                              str(ipv6_address_mode).lower())
      if ipv6_modes in IPV6_MODE_MAP:
          return ipv6_modes
  
  
  def get_ipv6_modes_attrs_from_menu(ipv6_modes):
      return [None if mode == 'none' else mode
              for mode in ipv6_modes.split('/', 1)]
  
new_contents: # Copyright 2014 NEC Corporation
  #
  #    Licensed under the Apache License, Version 2.0 (the "License"); you may
  #    not use this file except in compliance with the License. You may obtain
  #    a copy of the License at
  #
  #         http://www.apache.org/licenses/LICENSE-2.0
  #
  #    Unless required by applicable law or agreed to in writing, software
  #    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  #    License for the specific language governing permissions and limitations
  #    under the License.
  
  from django.utils.translation import ugettext_lazy as _
  
  IPV6_DEFAULT_MODE = 'none/none'
  IPV6_MODE_CHOICES = [
      ('none/none',
       _('No options specified')),
      ('slaac/slaac',
       _('SLAAC: Address discovered from OpenStack Router')),
      ('none/slaac',
       _('SLAAC: Address discovered from an external router')),
      ('dhcpv6-stateful/dhcpv6-stateful',
       _('DHCPv6 stateful: Address discovered from OpenStack DHCP')),
      ('dhcpv6-stateless/dhcpv6-stateless',
       _('DHCPv6 stateless: Address discovered from OpenStack Router '
         'and additional information from OpenStack DHCP')),
  ]
  IPV6_MODE_MAP = dict(IPV6_MODE_CHOICES)
  
  
  def get_ipv6_modes_menu_from_attrs(ipv6_ra_mode, ipv6_address_mode):
      ipv6_modes = '%s/%s' % (str(ipv6_ra_mode).lower(),
                              str(ipv6_address_mode).lower())
      if ipv6_modes in IPV6_MODE_MAP:
          return ipv6_modes
  
  
  def get_ipv6_modes_attrs_from_menu(ipv6_modes):
      return [None if mode == 'none' else mode
              for mode in ipv6_modes.split('/', 1)]
  
subject: Add the slaac ipv6 address mode without ra mode