Re: IPv6 Performance (was Re: IPv4 Pricing)

[Marco Moock via NANOG <nanog () lists nanog org>]

Am 03.12.2025 um 06:59:51 Uhr schrieb Vasilenko Eduard:

> Wrong math. The internet average packet size is very close to 750B -
> it has been published many times in many places.
>
> Wrong assumption about the user needs. User does not care about
> serialization time. He/she cares about FCT==Flow Completion Time. If
> one would get 2.6% less on the bottleneck, then his FCT would be 2.6%
> longer. His page would open later. His file would download later.

Your theoretical arguments have been discussed many times, it is now
boring.

The real experience shows that IPv6 is faster in certain real existing
environments like cellular networks (many people use them even at home)
or DS-Lite. I've also experienced overloaded CGNAT. The shorter header
is almost irrelevant in practice.

-- 
Gruß
Marco

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