this post was submitted on 01 Aug 2025
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We don't talk about IPv5 (lemmy.world)
submitted 2 days ago by qaz@lemmy.world to c/programmer_humor@programming.dev
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[–] gens@programming.dev 3 points 1 day ago (1 children)

They kept talking it was because address exaustion, and IANA sold all the remaining blocks they had...

I tested it at the time. Ran nmap ping scan across a block all night with zero results. IANA sold the internet

[–] pupbiru@aussie.zone 2 points 21 hours ago* (last edited 21 hours ago) (1 children)

many “unused” IP addresses are unused because they’re kinda like having spare parts: if you’re planning on extending your network in the futures, your IP block kinda should reflect your end state (ie the parts you need over time to replace or “build” new hosts)

or for blue/green deployments where it’s likely that at least half the IP range will be used in terms of process, but unused most of the time in terms of reachability

and then there’s weird things with splitting up IP blocks into subnets with a division of 3 (the minimum needed for dealing with net splits etc) - eg across availability zones… there are always “waste” IPs because you can’t divide multiples of 8 cleaning into 3