What are the issues that may be encountered in created vagrant boxes if I don't use the default virtualbox ip ranges for machines

I am working on Vagrant on my Ubuntu (20.04) and I learnt that the ip range allowed by default is 192.168.56.0/21 and that I can of course remove this restriction and use my own range.

I am new to vagrant and know if they are any inherent or severe results to use the /etc/vbox/networks.conf to set my own ip range. I am looking at using the ranges:

- 192.168.0.0/16
- 10.0.0.0/8
- 2001::/64

Apart from ip address conclusions for already created virtualbox machines why would this be a good or bad idea. I want to be able to set any ip address for my vagrant boxes for learning purposes.