Reply to post: Re: IPv6...

Windows 10 networking bug derails Microsoft's own IPv6 rollout

Anonymous Coward
Childcatcher

Re: IPv6...

"Yes, we need 128 bit addresses. Really?? An address for every grain of sand on the planet?"

You don't run routers for a living do you? The whole point of 128 bit addresses is efficient address aggregation. Unfortunately Private Address space will probably screw that up *sigh*.

The idea is that an ISP has a few (perhaps one) prefixes and each customer gets a /48 or /56. Even a /56 is enough for 256 /64 subnets and a /48 is enough for 256 (sites) * 256 /64 subnets or 16 (things) with 16 (sub things) with 256 subnets. A /64 subnet is huge, so no running out of addresses.

The IPv4 internet routing table is bloody massive nowadays but the IPv6 one _should_ be quite small because your addresses fit neatly within your ISPs, which fit within ... etc etc. Each entry will be bigger but there will be fewer of them.

Anyone wondering why even a home user might need VLANs has not been following the IoT discussion or noticed how it would be nice to have multiple wifi SSIDs that are segregated properly. One day its possible that we will all have multiple VLANs at home. Its not the fault of the IPv6 designers that your ISP is a twat that doesn't care about your security.

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