BMC/IPMI & ProxMost Host on the same Management Network?

I wanted to see what the wisdom is for having both BMC of my home lab servers being on the same management network as the ProxMox host itself. This is for a planned / updated homelab I'm working on. I was thinking of having a management network for both and putting both on the same one for having less vlans. However, I see a potential issue. If I put both on the same network, it would expose the the BMC's directly to the internet, unless I sign them static IP's and block them at the firewall level from havi