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Re:Millions of the Pentagon’s dormant IP addresses sprang to... by jandrese on Saturday April 24, 2021 @03:13PM (#26927506)
You don't have to use every address in 10.0.0.0/8 to effectively fill it up. If your corporate policy is to assign a /16 to each floor of a building, and you have a LOT of buildings it's pretty easy to fill up the space even if most of the /16s are sparsely populated. It's much easier to move on to the 11. space when you build that new building that pushes you over than renumbering your entire corporate LAN.
Re:Millions of the Pentagon’s dormant IP addresses sprang to... by xxpor on Sunday April 25, 2021 @12:15AM (#26930316)
Right, but that's not relevant for 1:1 NAT (well, at least it doesn't have to be). Since the NAT would happen in software, you're no longer constrained by subnets being physically under routers. 11.2.3.0/24 could contain 10.0.1.0/24 and 10.128.128.0/24 without any issues, assuming they don't use in total more than 256 address.