Timeline for Why is space reserved for private ip addresses?
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
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| Dec 22, 2015 at 4:27 | comment | added | Ron Maupin♦ | @NickBastin, as Vint Cerf, father of IP and the Internet told me, we will be using something else long before we need to worry about IPv6 address exhaustion. If there are 17 billion people in 2100, there will be over 2000 /48 networks per person, with 65,536 subnets per /48, and each subnet can have over 18 quintillion addresses. That assumes we only use the 1/8 of the IPv6 address space currently assigned for global addresses. | |
| Dec 22, 2015 at 4:14 | comment | added | Nick Bastin | @RonMaupin: Once upon a time someone thought 32-bits of address space was enough. Some day the effective size of IPv6 address space will also be a problem (as the effective size is a lot less than the total address space, due to minimum allocation size limitations). Definitely not unlimited. | |
| Dec 19, 2015 at 4:03 | vote | accept | bmcentee148 | ||
| Dec 19, 2015 at 2:40 | comment | added | Ron Maupin♦ | IP was originally designed so that every host would have a unique address. Unfortunately, the number of IPv4 addresses wouldn't come even close to supporting that today. The RFC 1918 private addresses were set up so that we could have unique private addresses within a network, and still have unique public IP addresses on the Internet. This requires NAT, which is a kludge. All this was to stall for time until the next version of IP (IPv6) becomes prevalent. IPv6 allows an almost unlimited number of IP addresses, and it fixes the address shortage. | |
| Dec 19, 2015 at 2:36 | comment | added | bmcentee148 | Ah so we can still determine if we were trying to communicate with a device on the local network or foreign device by reserving this space. Correct? | |
| Dec 19, 2015 at 2:32 | history | answered | Ron Maupin♦ | CC BY-SA 3.0 |