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this post was submitted on 03 Jul 2023
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I might sound naive, but are you talking about a homelab that is running more than 253 separetly networked machines, virtual or otherwise? I personally am only running a dozen or so with all my Pis and VMs as everything else is just port forwarded containers on those hosts. My understanding was that ipv6 was for better public facing IPs, since on LAN ipv4 offers a few thousand IPs for private use.
Na IPv6 goes back to what ipv4 was when there isn't a public and private range. Private ranges were due to ip exhaustion. NAT is then used.
With ipv6 you subnet your Lan with ipv6 delegate range from your ISP. Basically it's like subnetting your lan with a public ipv4 range. No nat required. As a firewall is used to stop packets not NAT. Also ipv4 RFC1918 doesn't provide a few thousand for private, it provides 17 million.