nanog mailing list archives
Re: IPv6 Ignorance
From: joel jaeggli <joelja () bogus com>
Date: Mon, 17 Sep 2012 00:04:01 -0700
On 9/16/12 9:22 PM, Mikael Abrahamsson wrote:
People aren't going to be the big consumers of address space relative to machines .On Mon, 17 Sep 2012, Randy Bush wrote:and don't bs me with how humongous the v6 address space is. we once though 32 bits was humongous.Giving out a /48 to every person on earth uses approximately 2^33 networks, meaning we could cram it into a /15. So even if we have 10 /48s at home from different providers, we're still only using a small fraction of the first /3. If we get this wrong, we have several more /3s to get it right in.
You already know this, and I can't really believe that people sat down in the 70ties and 80ties and said "there is never going to be more than 128 large corporations that need a /8 in IPv4" ?Emergent phenomena were not (and generaly are not) predicted. 32 bits was a lot more than 8 which was the previous go around..
I start to get worried when people want to map 32 bits into IPv6 in several places, for instance telling all ISPs that they can have a /24 so that we can produce IPv4 mapped /56 to end customer, and make this space permanent. Temporary is fine, permanent is not.or the application of semantic meaning to intermediate bits. and yeah the IPv6 bit field looks a lot smaller when you start carving off it in 24 bit or shorter chunks.
So I agree with you that there is still a risk that this is going to get screwed up, but I don't feel too gloomy yet.
Current thread:
- Re: IPv6 Ignorance, (continued)
- Re: IPv6 Ignorance John R. Levine (Sep 16)
- Re: IPv6 Ignorance Jimmy Hess (Sep 16)
- Re: IPv6 Ignorance Timothy Morizot (Sep 16)
- Re: IPv6 Ignorance Owen DeLong (Sep 17)
- Re: IPv6 Ignorance Randy Bush (Sep 16)
- Re: IPv6 Ignorance Michael Thomas (Sep 16)
- Re: IPv6 Ignorance Jimmy Hess (Sep 16)
- Re: IPv6 Ignorance Mikael Abrahamsson (Sep 16)
- Re: IPv6 Ignorance Randy Bush (Sep 16)
- Re: IPv6 Ignorance Mikael Abrahamsson (Sep 16)
- Re: IPv6 Ignorance joel jaeggli (Sep 17)
- Re: IPv6 Ignorance John Mitchell (Sep 17)
- Re: IPv6 Ignorance Suresh Ramasubramanian (Sep 17)
- Re: IPv6 Ignorance John Levine (Sep 17)
- Re: IPv6 Ignorance Matthew Kaufman (Sep 17)
- Re: IPv6 Ignorance Randy Bush (Sep 17)
- RE: IPv6 Ignorance Tomas L. Byrnes (Sep 28)
- RE: IPv6 Ignorance John R. Levine (Sep 28)
- Re: IPv6 Ignorance George Herbert (Sep 28)
- Re: IPv6 Ignorance Jason Leschnik (Sep 28)
- Re: IPv6 Ignorance Adrian Bool (Sep 17)