docs: def set_policy(name, table='filter', family='ipv4', **kwargs):
      '''
      .. versionadded:: 2014.1.0
  
      Sets the default policy for iptables firewall tables
  
      table
          The table that owns the chain that should be modified
  
      family
          Networking family, either ipv4 or ipv6
  
      policy
          The requested table policy
  
      '''
      ret = {'name': name,
          'changes': {},
          'result': None,
          'comment': ''}
  
      for ignore in _STATE_INTERNAL_KEYWORDS:
          if ignore in kwargs:
              del kwargs[ignore]
  
      if __salt__['iptables.get_policy'](
              table,
              kwargs['chain'],
              family) == kwargs['policy']:
          ret['result'] = True
          ret['comment'] = ('iptables default policy for chain {0} on table {1} for {2} already set to {3}'
                            .format(kwargs['chain'], table, family, kwargs['policy']))
          return ret
      if __opts__['test']:
          ret['comment'] = 'iptables default policy for chain {0} on table {1} for {2} needs to be set to {3}'.format(
              kwargs['chain'],
              table,
              family,
              kwargs['policy']
          )
          return ret
      if not __salt__['iptables.set_policy'](
              table,
              kwargs['chain'],
              kwargs['policy'],
              family):
          ret['changes'] = {'locale': name}
          ret['result'] = True
          ret['comment'] = 'Set default policy for {0} to {1} family {2}'.format(
              kwargs['chain'],
              kwargs['policy'],
              family
          )
          if 'save' in kwargs:
              if kwargs['save']:
                  __salt__['iptables.save'](filename=None, family=family)
                  ret['comment'] = 'Set and saved default policy for {0} to {1} family {2}'.format(
                      kwargs['chain'],
                      kwargs['policy'],
                      family
                  )
          return ret
      else:
          ret['result'] = False
          ret['comment'] = 'Failed to set iptables default policy'
          return ret