def source_interface=(name)
      if name
        Feature.tacacs_enable
        config_set(
          'tacacs_global', 'source_interface',
          state: '', source_interface: name)
      else
        config_set(
          'tacacs_global', 'source_interface',
          state: 'no', source_interface: '')
      end
    end
def source_interface=(name)
      if name
        Feature.tacacs_enable
        config_set(
          'tacacs_global', 'source_interface',
          state: '', source_interface: name)
      else
        config_set(
          'tacacs_global', 'source_interface',
          state: 'no', source_interface: '')
      end
    end
Set source interface