content = [
    ["Backbone Gateway", "R77.30", "172.30.11.3"],
    ["Perimeter GW", "R80.10", "192.30.11.3"]
]

header = ["Gateway Name", "Version", "IP Address"]

print(tabulate(content, headers=header, tablefmt='orgtbl'))

# output
| Gateway Name     | Version   | IP Address   |
|------------------+-----------+--------------|
| Backbone Gateway | R77.30    | 172.30.11.3  |
| Perimeter GW     | R80.10    | 192.30.11.3  |