https - hopefully not too stupid a question

Florian Weimer fw at
Mon Jun 18 06:36:57 BST 2012

* Alec Muffett:

> On 17 Jun 2012, at 22:27, Florian Weimer wrote:
>> IPv6 does not mean that the network will provision multiple addresses
>> to you.  You will still have to pay extra for that.
> Actually it's exactly the point; over on ORG-discuss an ISP guy who does this says:


> …which will give each user's home 2^64 reachable IP addresses.

Not in datacenters, where you'd typically have machines which run data
centers.  With IPv4, most hosters tell you to configure a /24 netmask
on your interface.  But this doesn't mean that you'll be able to use
more than the one IPv4 address the network has handed to you.

With IPv6, there are still technical reasons for limits, although
addresses aren't scarce: each address requires precious TCAM space,
and neighbor discovery does not work at scale.

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