I'm actually trying a hybrid approach with some VPCs: use firewalled IPv6 ports for remote management, direct to the VMs; while siphoning off the IPv4 traffic to a basic Linux host with Netfilter rules acting as a NAT router. I keep the benefits of using IPv6, without eating up a bunch of external IPv4 addresses, that I would also have to account for on filtering.
I wrote this in Fall/Winter 2022/23 and got some use out of it for my own data archives. Haven't done much else with it since, but would be willing to add/revise some features on it, if there's interest.
I'm actually trying a hybrid approach with some VPCs: use firewalled IPv6 ports for remote management, direct to the VMs; while siphoning off the IPv4 traffic to a basic Linux host with Netfilter rules acting as a NAT router. I keep the benefits of using IPv6, without eating up a bunch of external IPv4 addresses, that I would also have to account for on filtering.