> On Jul 9, 2015, at 09:16 , Matthew Huff <mh...@ox.com> wrote: > > When I see a car that needs a /56 subnet then I’ll take your use case > seriously. Otherwise, it’s just plain laughable. Yes, I could theorize a use > case for this, but then I could theorize that someday everyone will get to > work using jetpacks.
When I see a reason not to give out /48s, I might start taking your argument seriously. > We have prefix delegation already via DHCP-PD, but some in the IPv6 world > don’t even want to support DHCP, how does SLAAC do prefix delegation, or am I > missing something else? I assume each car is going to be running as RA? > Given quality of implementations of IPv6 in embedded devices so far, I found > that pretty ludicrous. Clearly the quality of IPv6 in embedded devices needs to improve. There’s clearly work being done on LWIP IPv6, but I don’t think it’s ready for prime time yet. (LWIP is one of the most popular embedded IP stacks. You’ll find it in a wide range of devices, including, but not limited to the ESP8266). > Seriously, the IPv6 world needs to get a clue. Creating new protocols and > solutions at this point in the game is only making it more difficult for IPv6 > deployment, not less. IPv6 needs to stabilize and get going.. instead it > seems everyone is musing about theoretical world where users need 64k > networks. I understand the idea of not wanting to not think things through, > but IPv6 is how many years old, and we are still arguing about these things? > Don’t let the prefect be the enemy of the good. /48s for end sites are NOT new… They have been part of the IPv6 design criteria from about the same time 128-bit addresses were decided. It is these silly IPv4-think notions of /56 and /60 that are new changes to the protocol. The good news is that it’s very easy to deploy /48s and if it turns out we were wrong, virtually everyone currently advocating /48s will happily help you get more restrictive allocation policies when 2000::/3 runs out. (assuming any of us are still alive when that happens). Owen
