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0 pointsajross5y ago0 comments

There's no reason an ISP can't overcommit a /8 network. There's no particular reason they need to promise that you can reach the IP of another Rogers subscriber. One "instance" of 10/8 per region or household or whatever would work just fine.

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corty5y ago· 2 in thread

It would maybe work, but it would also vastly complicate everything. Debugging and logging, setup, maintenance would all be rigged to support that address reuse.

xorcist5y ago

If you have dynamic allocation of customer IPs, you have to store that data anyway.

corty5y ago

Yes, but you need a lot more gateways, jumphosts and general indirection to deal with the different network segments. And you need to customize a lot if stuff, because you can't just log "it came from 10.12.13.14", you need to log the network segment and gateway it came from as well. Non-flat address spaces are hell.

That said, the real solution is IPv6

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