nanog mailing list archives
Re: Companies using public IP space owned by others for internal routing
From: Anthony Newman via NANOG <nanog () nanog org>
Date: Tue, 19 Dec 2017 14:19:52 -0800
On 2017-12-19 12:18 PM, UpTide . wrote:
If we allocate a /64 like we do single ipv4 addresses now the space gets 2^56 (16777216) times larger; but if we start doing something crazy like allocating a /48 or /56 that number plummets. (256 times larger, and 65536 times larger respectfully.) But then again I'm bad with math, maybe not?
You most certainly are. There are (2^32)*(2^32) in 2^64, meaning everyone who has a /32 of IPv4 would get about 4 billion /64s if we chopped it all up the same way. Or 65536 /48s, or 16777216 /56s.
I think the argument is not that there isn't enough address space to go around; more that profligate allocations to begin with may restrict future options on a century-scale timeline.
Current thread:
- Re: Companies using public IP space owned by others for internal routing, (continued)
- Re: Companies using public IP space owned by others for internal routing William Herrin (Dec 18)
- Re: Companies using public IP space owned by others for internal routing ITechGeek (Dec 19)
- Re: Companies using public IP space owned by others for internal routing William Herrin (Dec 19)
- Re: Companies using public IP space owned by others for internal routing Grant Taylor via NANOG (Dec 19)
- Re: Companies using public IP space owned by others for internal routing Bryan Holloway (Dec 19)
- Re: Companies using public IP space owned by others for internal routing valdis . kletnieks (Dec 19)
- Re: Companies using public IP space owned by others for internal routing UpTide . (Dec 19)
- Re: Companies using public IP space owned by others for internal routing valdis . kletnieks (Dec 19)
- Re: Companies using public IP space owned by others for internal routing Owen DeLong (Dec 20)
- Re: Companies using public IP space owned by others for internal routing valdis . kletnieks (Dec 20)
- Re: Companies using public IP space owned by others for internal routing Anthony Newman via NANOG (Dec 20)
- Re: Companies using public IP space owned by others for internal routing Owen DeLong (Dec 21)
- Re: Companies using public IP space owned by others for internal routing William Herrin (Dec 21)
- Waste will kill ipv6 too Mike (Dec 20)
- Re: Waste will kill ipv6 too Mel Beckman (Dec 20)
- Re: Waste will kill ipv6 too William Herrin (Dec 20)
- Re: Waste will kill ipv6 too Mel Beckman (Dec 20)
- Re: Waste will kill ipv6 too Mel Beckman (Dec 20)
- RE: Waste will kill ipv6 too Keith Medcalf (Dec 20)
- Re: Waste will kill ipv6 too Mark Andrews (Dec 20)
- Re: Waste will kill ipv6 too William Herrin (Dec 20)