def default_pool=(pool)
      # Ensure the pool is valid.
      begin
        IPAddr.new pool
      rescue ArgumentError
        raise InvalidSettingErrror,
          :setting_name => 'default_pool',
          :value => pool.inspect
      end

      @default_pool = pool
    end
def default_pool=(pool)
      # Ensure the pool is valid.
      begin
        IPAddr.new pool
      rescue ArgumentError
        raise InvalidSettingErrror,
          :setting_name => 'default_pool',
          :value => pool.inspect
      end

      @default_pool = pool
    end
Set the default pool to a new IP range.

 @param pool [String]
 @raise [InvalidSettingErrror] if an IPAddr object cannot be initialized
   from the value of pool.
 @return [void]