OTOH there is the case
of getting a device (in this case a re-branded XXXXXXX Router) to do something that was not described in the manual. We found it by accident and saved us a shed load of money in doing do.
Somehow, XXXXXX found out (probably by the customer who wanted to repeat it on the cheap) and told us in no uncertain terms that
1) To stop doing it as the function was not in the license/manual
2) The next firmware release have the 'hole' patched. I huge license uptick was needed to allow it.
you can't win can you eh?