nanog mailing list archives
Re: CC: s to Non List Members (was Re: 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock)
From: "John Levine" <johnl () iecc com>
Date: 8 Mar 2022 19:14:34 -0500
It appears that William Herrin <bill () herrin us> said:
On Tue, Mar 8, 2022 at 12:34 PM John Levine <johnl () iecc com> wrote:FWIW, I also don't think that repurposing 240/4 is a good idea. To be useful it would require that every host on the Internet update its network stack,Hi John, That's incorrect and obviously so. While repurposing 240/4 as general purpose Internet addresses might require that level of effort, other uses such as local LAN addressing would only require the equipment on that one lan to be updated -- a much more attainable goal.
If you want to patch your devices so they use 240/4 as a version of 10/8 on your own network, you can do that any time you want.
Reallocating 240/4 as unpurposed unicast address space would allow some standards-compliant uses to become practical before others. A few quite quickly.
So long as we agree that "quickly" means a decade. If we did this bad idea, at some point there would be a tipping point where enough hosts recognized them to be useful, but we say the same thing about IPv6.
Is it not past time we admit that we have no real idea what the schedule or level of effort will be for making IPv6 ubiquitous?
Oh, absolutely. I have conversations with my hosting provider in which they tell me that nobody has ever asked for IPv6 other than me, and they had no idea their upstream (Spectrum) had native IPv6. So I keep using a tunnel. I would expect the same conversations about 240/4. R's, John
Current thread:
- 202203071610.AYC Re: Making Use of 240/4 NetBlock Abraham Y. Chen (Mar 08)
- Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock Tom Beecher (Mar 08)
- 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock Abraham Y. Chen (Mar 08)
- CC:s to Non List Members (was Re: 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock) Anne Mitchell (Mar 08)
- Re: CC: s to Non List Members (was Re: 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock) John Levine (Mar 08)
- Re: CC: s to Non List Members (was Re: 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock) William Herrin (Mar 08)
- Re: CC: s to Non List Members (was Re: 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock) John Levine (Mar 08)
- Re: CC: s to Non List Members (was Re: 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock) John Kristoff (Mar 08)
- Re: CC: s to Non List Members (was Re: 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock) Masataka Ohta (Mar 08)
- Re: CC: s to Non List Members (was Re: 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock) Tom Beecher (Mar 08)
- Re: CC: s to Non List Members (was Re: 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock) Nathan Angelacos (Mar 08)
- Re: CC: s to Non List Members (was Re: 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock) John R. Levine (Mar 08)
- Re: CC: s to Non List Members (was Re: 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock) Seth David Schoen (Mar 08)
- Re: CC: s to Non List Members (was Re: 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock) Owen DeLong via NANOG (Mar 08)
- Re: CC: s to Non List Members (was Re: 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock) Joe Maimon (Mar 10)
- 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock Abraham Y. Chen (Mar 08)
- Re: CC: s to Non List Members (was Re: 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock) Mark Andrews (Mar 08)
- Re: CC: s to Non List Members (was Re: 202203080924.AYC Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock) Dave Taht (Mar 08)
- Re: 202203071610.AYC Re: Making Use of 240/4 NetBlock Tom Beecher (Mar 08)