how to display column with doip user data using field name doip.data

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The doip.data field is only populated if the doip dissector cannot locate the UDS (Unified Diagnostic Services) dissector. As the UDS dissector is present and manages to dissect the DoIP messages in your capture, the field is not populated.

Oddly, disabling the UDS dissector still doesn't populate the field, but the data.data field is then available, you could try this if you must see the bytes in a column.