-my $model = { field => 'typenum',
- type => 'text',
- value => sub { $_[0]->hardware_type->model }
- };
+
+$labels{'display_hw_addr'} = 'Hardware address';
+
+my $model = { field => 'typenum',
+ type => 'text',
+ value_callback => sub { $_[0]->hardware_type->description }
+ };