Reply to post: Re: There's begillions

IPv6 is great, says Facebook. For us. And for you a bit, too

Anonymous Coward
Anonymous Coward

Re: There's begillions

Except the "trillion trillion" addresses is false, because the designers of IPv6 decreed that you must use a /64 for each subnet; and no network engineer in their right mind would put more than 1000 servers on a single broadcast domain (250 would be a better limit)

So your /48 of IP addresses is really 65536 subnets, and if you put an average of 250 machines on each subnet, that's about 16 million usable addresses.

Don't get me wrong - that's still more than plenty for most uses. But it's not the "trillions" that people imagine.

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