IPv6 and CDN's

Fri Nov 26 23:26:40 UTC 2021

Might also be due to Happy Eyeballs 2 artificial IPv4 A resolution delay.

https://www.researchgate.net/publication/343467289_Reducing_User_Perceived_Latency_in_Smart_Phones_Exploiting_IP_Network_Diversity/fulltext/5f2b6bdaa6fdcccc43ac7b99/Reducing-User-Perceived-Latency-in-Smart-Phones-Exploiting-IP-Network-Diversity.pdf

I don’t know the current Apple IOS HE2 postpone delay.

JC Bisecco

De : NANOG <nanog-bounces+jc=jclb.net at nanog.org> De la part de Michael Thomas
Envoyé : samedi 27 novembre 2021 00:20
À : Ca By <cb.list6 at gmail.com>
Cc : nanog at nanog.org
Objet : Re: IPv6 and CDN's

On 11/26/21 3:11 PM, Ca By wrote:

On Fri, Nov 26, 2021 at 6:07 PM Michael Thomas <mike at mtcc.com<mailto:mike at mtcc.com>> wrote:

On 11/26/21 1:44 PM, Jean St-Laurent via NANOG wrote:
Here are some maths and 1 argument kicking ass pitch for CFO’s that use iphones.
Apple tells app devs to use IPv6 as it's 1.4 times faster than IPv4
https://www.zdnet.com/article/apple-tells-app-devs-to-use-ipv6-as-its-1-4-times-faster-than-ipv4/

Build around that maybe?

This really hits my bs meter big time. I can't see how nat'ing is going to cause a 40% performance hit during connections. The article also mentions http2 (and later v3) which definitely make big improvements so I'm suspecting that the author is conflating them.

Mike

Ok, take the same ipv6 is faster claim from facebook

https://www.internetsociety.org/blog/2015/04/facebook-news-feeds-load-20-40-faster-over-ipv6/

Still really thin with details of why. At least this says that they are NAT'ing v4 at *their* edge. But 99% of the lag of filling your newsfeed is their backend and transport, not connection times so who knows what they are actually measuring. Most NAT'ing is done at the consumer end by your home router in any case.

Mike
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