nanog mailing list archives
Re: IP4 Space - the lie
From: Dan White <dwhite () olp net>
Date: Sat, 6 Mar 2010 10:14:37 -0600
On 06/03/10 23:36 +1030, Mark Newton wrote:
On 06/03/2010, at 1:10 AM, Dan White wrote:On 05/03/10 12:39 +0000, bmanning () vacation karoshi com wrote:I *wholeheartedly* agree with Owen's assessment. Even spending time trying to calculate a rebuttal to his numbers is better spent moving toward dual-stack ;) Nice. Steveer... what part of dual-stack didn't you understand? dual-stack consumes exactly the same number of v4 and v6 addresses.I would expect the number of v6 addresses assigned to a host to be a multiple of the number of v4 addresses, depending on the type of host.That's because you haven't done it yet. When you start doing it, you'll see that the number of v6 addresses assigned to a host will bear almost no relationship whatsoever to any metrics you've previously used to allocated IPv4 addresses.
I have. Windows XP, for instance, will auto assign multiple addresses during auto configuration, including random identifiers. If you through in multiple routers for redundancy, then you start to have a multiplying effect, compared to your typical one v4 address per end user host. Also, the number of publicly routeable v6 addresses assigned to hosts is surely much higher, on average, than the public v4 addresses assigned to those hosts.
Or, dual stack today. When you've run out of IPv4 addresses for new end users, set them up an IPv6 HTTP proxy, SMTP relay and DNS resolver and/or charge a premium for IPv4 addresses when you start to sweat.I expect that once we all work out that we can use SP-NAT to turn "dynamic IPv4 addresses" into "shared dynamic IPv4 addresses," we'll have enough spare IPv4 addresses for much of the foreseeable future.If I have half a million residential subscribers and I can get ten subscribers onto each NATted IPv4 addresses, then I only need 50,000addresses to service them. Yet I have half a million addresses *right now*, which I won't be giving back to my RIR. So that turns into 450,000 saleable addresses for premium customers after the SP-NAT box is turned on, right?
Possibly. I understand how to do HTTP proxies today, and understand its limitations. But it's a far more appealing technology than all these future technologies being proposed that fit in the 'once we all work out that we can use' category. -- Dan White
Current thread:
- Re: IP4 Space - the lie, (continued)
- Re: IP4 Space - the lie bmanning (Mar 05)
- Re: IP4 Space - the lie Cameron Byrne (Mar 05)
- Re: IP4 Space - the lie Owen DeLong (Mar 05)
- Re: IP4 Space - the lie Suzanne Woolf (Mar 05)
- Re: IP4 Space - the lie bmanning (Mar 06)
- Re: IP4 Space - the lie Jim Burwell (Mar 05)
- Re: IP4 Space - the lie Dan White (Mar 05)
- Re: IP4 Space - the lie bmanning (Mar 05)
- Re: IP4 Space - the lie Owen DeLong (Mar 05)
- Re: IP4 Space - the lie Mark Newton (Mar 06)
- Re: IP4 Space - the lie Dan White (Mar 06)
- Re: IP4 Space - the lie Cameron Byrne (Mar 06)
- Re: IP4 Space - the lie Saku Ytti (Mar 06)
- Re: IP4 Space - the lie Mark Andrews (Mar 06)
- Re: IP4 Space - the lie Saku Ytti (Mar 07)
- Re: IP4 Space - the lie Owen DeLong (Mar 06)
- Re: IP4 Space - the lie Saku Ytti (Mar 07)
- Re: IP4 Space - the lie Owen DeLong (Mar 07)
- Re: IP4 Space - the lie Owen DeLong (Mar 06)
- Re: IP4 Space - the lie Valdis . Kletnieks (Mar 07)
- Re: IP4 Space - the lie Mark Newton (Mar 07)