5.3 Merge window, part 1

Posted Jul 16, 2019 23:19 UTC (Tue) by mtaht (subscriber, #11087)
In reply to: 5.3 Merge window, part 1 by naptastic
Parent article: 5.3 Merge window, part 1

re: 240/4 (formerly class E), has basically worked on most OSes, except windows, since 2008. In linux, it needed one trivial patch (landed last december) to work correctly with ifconfig (it already worked with ip route) and 240/4 has now been extensively tested in openwrt.

Only a few routing daemons and related routing hw needs to be modified to make 240/4 globally routable. Babeld already has support, the FRR and bird folk have agreed in principle to make it work, juniper works with a flag, cisco's enterprise routers work, smaller scale ones don't. currently.

5.3 Merge window, part 1

Posted Jul 16, 2019 23:40 UTC (Tue) by Cyberax (✭ supporter ✭, #52523) [Link] (5 responses)

So you're looking at least for 3-4 more years for it to become available. Routers are not updated often and quiet a few Linuxes stay at the same kernel version for years.

Is it worth it now?

5.3 Merge window, part 1

Posted Jul 17, 2019 3:23 UTC (Wed) by mtaht (subscriber, #11087) [Link] (4 responses)

The best linear projection for 100% ipv6 adoption in one country was 7 years. Others, decades. So... yes, I think cleaning up ipv4 as best we can is needed.

5.3 Merge window, part 1

Posted Jul 17, 2019 16:42 UTC (Wed) by Cyberax (✭ supporter ✭, #52523) [Link] (1 responses)

Right now it's at 30% with about 10% YoY growth: https://www.google.com/intl/en/ipv6/statistics.html

So yes, 7 years is about right. However, this assumes linear growth and it's probably not. For example, China has an official plan to move to IPv6 by 2025 with major deployments starting next year.

5.3 Merge window, part 1

Posted Jul 18, 2019 6:19 UTC (Thu) by cpitrat (subscriber, #116459) [Link]

Well, 2025 is in 6 years, so not that far from 7 years ...

5.3 Merge window, part 1

Posted Jul 17, 2019 20:31 UTC (Wed) by farnz (subscriber, #17727) [Link]

The trouble is that if you look at Geoff's IPv4 Address Report, we were consuming more than a /8 per month until we ran out of free-floating addresses. So cleaning up IPv4 needs to provide 84 /8s to get us to 7 years - for decades, you're looking at hundreds of /8s, which is going to get awkward…

5.3 Merge window, part 1

Posted Jul 18, 2019 23:02 UTC (Thu) by naptastic (guest, #60139) [Link]

I'm looking at a map of the Internet as of 2018, and I see a lot of empty space that I wonder if we could get by either asking nicely, offering money, or passing legislation. (I count nine /8's belonging to US agencies that appear completely dark on the map. How much does the US government really need for all its agencies? Every agency in every state plus federal agencies is still less than 2^16. I'd bet companies like Ford, HP, maybe Apple, would be willing take money for smaller allocations; no code has to change; and whoever buys control of those ranges can recoup the cost by selling smaller allocations.) Maybe I'm being Pollyannaish but I see win-win situations that would require nothing more than cooperation.