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Comment: Re:IPv6 (Score 2) 248

by Geordish (#47662299) Attached to: The IPv4 Internet Hiccups

Why would that be different than with IPv4? Prefix aggregation, AKA route summary, AKA Supernetting, has been available for a very long time. Unless IPv6 addresses are being handed out in a way that's much more conducive to this, it won't really change anything. This guy agrees (#4)

He is kinda correct, but the RIR's have come up with addressing plans to deal with this.
My info comes from the RIPE region, as its the region I'm in.

Every ISP gets assigned a /29 minimum. This is 2^35 networks (assuming you are using a /64 per network as recommended). If you prove you need more than a /29, fine, you can have it.

The next 3 bits are then reserved for future use. You use up your initial /29? Fine, increase your subnet mask to /28 and carry on. This doubles you address space. Carry on until you are at a /26. That is a LOT of room for growth.

In the IPv4 world this isn't possible. You get your allocation. You run out. You get another etc. Verizon are currently announcing 1,446 IPv4 prefixes from AS701, compared to the 12 IPv6 prefixes. Of the 12 IPv6 prefixes 5 of them are the one prefix they have deaggagated, the rest are customers with PI space.

You have a point about the near term, but long term once IPv4 has died a death (10+ years) the routing table will shrink again.

At the source of every error which is blamed on the computer you will find at least two human errors, including the error of blaming it on the computer.

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