/27 the new /24

Wed Oct 7 12:13:37 UTC 2015

Memory footprint is still an issue in lots of things like ESP8266 (which doesn’t yet support IPv6, but hopefully will soon).

Not everything is a cell phone or larger. There are lots of cool new things coming out in the SoC world where you’ve got a micro controller, GPIOs, CAN, SPI, WiFi, and more all in a single chip or module.

Another example (also currently IPv4 only, but hopefully that will get fixed) is particle.io.

These are $10-$20 (and sometimes even less) complete systems with very small memories and very low power consumption which are great for deploying things like remote sensors and the like.

Owen

> On Oct 4, 2015, at 11:15 AM, Mel Beckman <mel at beckman.org> wrote:
> 
> Stefann,
> 
> You're right. I remember hearing rumblings of vendors requesting this change, mostly because embedded processors of the time had difficulty performing well with IPv6. I see that in 2011 rfc6434 lowered IPSec from "must" to "should". Nevertheless, plenty of products produced before 2011 included IPSec and the vast majority of IPv6-capable nodes on the Internet have it today. Performance is no longer an issue. 
> 
> -mel beckman
> 
>> On Oct 4, 2015, at 8:58 AM, Sander Steffann <sander at steffann.nl> wrote:
>> 
>> Hi,
>> 
>>> Op 4 okt. 2015, om 16:52 heeft Mel Beckman <mel at beckman.org> het volgende geschreven:
>>> 
>>> If it doesn't support IPSec, it's not really IPv6. Just as if it failed to support any other mandatory IPv6 specification, such as RA.
>> 
>> I think you're still looking at an old version of the IPv6 Node Requirements. Check https://tools.ietf.org/html/rfc6434#section-11, specifically this bit:
>> 
>> """
>> Previously, IPv6 mandated implementation of IPsec and recommended the key management approach of IKE.  This document updates that recommendation by making support of the IPsec Architecture a SHOULD for all IPv6 nodes.
>> """
>> 
>> This was published in December 2011.
>> 
>> Cheers,
>> Sander
>> 